diff --git a/src/dropdown/DropdownButton.tsx b/src/dropdown/DropdownButton.tsx
index 9a1f12d2..18d4d48f 100644
--- a/src/dropdown/DropdownButton.tsx
+++ b/src/dropdown/DropdownButton.tsx
@@ -1,19 +1,23 @@
 import React, { ReactNode, CSSProperties } from 'react';
-import { css } from '@emotion/react';
+import { css, keyframes } from '@emotion/react';
 import { classNames } from '../utils/classNames';
 import { mergeProps } from '@react-aria/utils';
 import { useButton } from '@react-aria/button';
 import { useHover } from '@react-aria/interactions';
-import { FocusableRef } from '../types';
+import { FocusableRef, Validation } from '../types';
 import { useFocusableRef } from '../utils/useDOMRef';
 import theme from '../theme';
 import { AddonBefore } from '../field';
-import { Icon, ArrowIosDownwardOutline } from '../icon';
+import { Icon, ArrowIosDownwardOutline, AlertCircleOutline } from '../icon';
 import { AddonableProps } from '../types';
 import { FocusRing } from '@react-aria/focus';
 import { textSizeCSS } from '../content/styles';
 
-export interface DropdownButtonProps extends AddonableProps {
+const appearKeyframes = keyframes`
+    0% {  opacity: 0; }
+    100% { opacity: 1; }
+`;
+export interface DropdownButtonProps extends AddonableProps, Validation {
   /**
    * Whether the button should be displayed with a quiet style.
    * @default false
@@ -59,6 +63,15 @@ const buttonBaseCSS = css`
   &[disabled] {
     opacity: ${theme.opacity.disabled};
   }
+  .ac-dropdown-button__validation-icon {
+    /* Animate in the icon */
+    animation: ${appearKeyframes} ${0.2}s forwards ease-in-out;
+    top: ${theme.spacing.padding8}px;
+    right: 0;
+    &.ac-dropdown-button__validation-icon--invalid {
+      color: ${theme.colors.statusDanger};
+    }
+  }
 `;
 
 /**
@@ -86,6 +99,17 @@ const quietButtonCSS = css`
     cursor: default;
     border-bottom: 1px solid ${theme.components.dropdown.borderColor};
   }
+
+  &.ac-dropdown-button--invalid {
+    border-bottom: 1px solid ${theme.colors.statusDanger};
+    div.ac-dropdown__content {
+      color: ${theme.colors.statusDanger};
+    }
+  }
+  // Make room for the invalid icon
+  &.ac-dropdown-button--invalid > div.ac-dropdown__content {
+    padding-right: ${theme.spacing.padding24}px;
+  }
 `;
 
 /**
@@ -119,6 +143,18 @@ const nonQuietButtonCSS = css`
     margin: ${theme.spacing.margin8}px ${theme.spacing.margin8}px
       ${theme.spacing.margin8}px ${theme.spacing.margin16}px;
   }
+
+  &.ac-dropdown-button--invalid {
+    border: 1px solid ${theme.colors.statusDanger};
+    div.ac-dropdown__content {
+      color: ${theme.colors.statusDanger};
+    }
+  }
+
+  // Make room for the invalid icon (outer padding + icon width + inner padding)
+  &.ac-dropdown-button--invalid > div.ac-dropdown__content {
+    padding-right: ${theme.spacing.padding8 + 24 + theme.spacing.padding4}px;
+  }
 `;
 
 /**
@@ -139,13 +175,22 @@ function DropdownButton(
     children,
     style,
     addonBefore,
+    validationState,
     // TODO: add support for autoFocus
     // autoFocus,
     ...otherProps
   } = props;
   const { buttonProps, isPressed } = useButton(props, domRef);
   const { hoverProps, isHovered } = useHover({ isDisabled });
+  const isInvalid = validationState === 'invalid';
 
+  const validation = (
+    <Icon
+      key="validation-icon"
+      className={`ac-dropdown-button__validation-icon ac-dropdown-button__validation-icon--${validationState}`}
+      svg={<AlertCircleOutline />}
+    />
+  );
   return (
     <FocusRing focusRingClass="focus-ring">
       <button
@@ -156,6 +201,8 @@ function DropdownButton(
           'is-active': isActive || isPressed,
           'is-disabled': isDisabled,
           'is-hovered': isHovered,
+          'ac-dropdown-button--invalid': isInvalid,
+          'ac-dropdown-button--valid': validationState === 'valid',
         })}
         style={style}
         css={css(
@@ -176,6 +223,7 @@ function DropdownButton(
         >
           {children}
         </span>
+        {validationState && validationState === 'invalid' ? validation : null}
         <Icon svg={<ArrowIosDownwardOutline />} />
       </button>
     </FocusRing>
diff --git a/src/picker/Picker.tsx b/src/picker/Picker.tsx
index 5cec8052..76718f48 100644
--- a/src/picker/Picker.tsx
+++ b/src/picker/Picker.tsx
@@ -26,7 +26,6 @@ import theme from '../theme';
 import { useProviderProps } from '../provider';
 import { Field } from '../field';
 import { dimensionValue } from '../utils/styleProps';
-import { AlertCircleOutline, Icon } from '../icon';
 
 function Picker<T extends object>(
   props: PickerProps<T>,
@@ -156,16 +155,6 @@ function Picker<T extends object>(
     minWidth: isQuiet ? '200px' : buttonWidth,
   };
 
-  let isInvalid = validationState === 'invalid';
-
-  const validation = (
-    <Icon
-      key="validation-icon"
-      className={`ac-dropdown__validation-icon ac-dropdown__validation-icon--${validationState}`}
-      svg={<AlertCircleOutline />}
-    />
-  );
-
   const overlay = (
     <Popover
       isOpen={state.isOpen}
@@ -191,6 +180,7 @@ function Picker<T extends object>(
       <span
         className={classNames({
           'is-placeholder': state.selectedItem == null,
+          'ac-dropdown__content': true,
         })}
       >
         {contents}
@@ -205,8 +195,6 @@ function Picker<T extends object>(
         {
           'is-disabled': isDisabled,
           'ac-dropdown--quiet': isQuiet,
-          'ac-dropdown--invalid': isInvalid,
-          'ac-dropdown--valid': validationState === 'valid',
         },
         props.className
       )}
@@ -239,13 +227,11 @@ function Picker<T extends object>(
           className={classNames('ac-dropdown-trigger', {
             'is-hovered': isHovered,
           })}
+          validationState={validationState}
           {...{ addonBefore }}
         >
           <div>{contents}</div>
           {isLoadingInitial && 'Loading...'}
-          {validationState && validationState === 'invalid' && !isLoadingInitial
-            ? validation
-            : null}
         </DropdownButton>
       </PressResponder>
       {state.collection.size === 0 ? null : overlay}
diff --git a/src/types/select.ts b/src/types/select.ts
index a3fa528b..c6ca98c1 100644
--- a/src/types/select.ts
+++ b/src/types/select.ts
@@ -1,6 +1,6 @@
 import { LabelableProps, Alignment, AddonableProps } from './labelable';
 import { CollectionBase } from './collection';
-import { InputBase, TextInputBase } from './input';
+import { HelpTextProps, InputBase, TextInputBase } from './input';
 import { AriaLabelingProps, DOMProps, FocusableDOMProps } from './dom';
 import { SingleSelection } from './selection';
 import { FocusableProps } from './events';
@@ -48,7 +48,8 @@ export interface PickerProps<T>
   extends AriaSelectProps<T>,
     AddonableProps,
     StyleProps,
-    Validation {
+    Validation,
+    HelpTextProps {
   /**
    * Whether the picker should be displayed with a quiet style.
    * @default false
diff --git a/stories/Form.stories.tsx b/stories/Form.stories.tsx
index b3481473..ec51d700 100644
--- a/stories/Form.stories.tsx
+++ b/stories/Form.stories.tsx
@@ -32,7 +32,7 @@ const meta: Meta = {
 
 export default meta;
 
-const Template: Story<FormProps> = args => {
+const Template: Story<FormProps> = (args) => {
   const { control, handleSubmit } = useForm();
   const onSubmit = (d: any) => {
     alert(JSON.stringify(d));
@@ -100,12 +100,19 @@ const Template: Story<FormProps> = args => {
         <Controller
           name={'tier'}
           control={control}
-          render={({ field: { onChange, value } }) => (
+          rules={{ required: 'This field is required' }}
+          render={({
+            field: { onChange, value },
+            fieldState: { invalid, error },
+          }) => (
             <Picker
               addonBefore="$"
               onSelectionChange={onChange}
               selectedKey={value}
               label={'Charge Amount'}
+              validationState={invalid ? 'invalid' : undefined}
+              errorMessage={error?.message}
+              aria-errormessage={error?.message}
             >
               <Item>Free</Item>
               <Item>Paid</Item>
@@ -203,11 +210,19 @@ export const QuietForm: Story<FormProps> = () => {
       <Controller
         name={'tier'}
         control={control}
-        render={({ field: { onChange, value } }) => (
+        rules={{ required: 'This field is required' }}
+        render={({
+          field: { onChange, value },
+          fieldState: { invalid, error },
+        }) => (
           <Picker
+            addonBefore="$"
             onSelectionChange={onChange}
             selectedKey={value}
             label={'Charge Amount'}
+            validationState={invalid ? 'invalid' : undefined}
+            errorMessage={error?.message}
+            aria-errormessage={error?.message}
           >
             <Item>Free</Item>
             <Item>Paid</Item>
@@ -248,7 +263,7 @@ const Break = () => (
   />
 );
 
-export const InlineForm: Story<FormProps> = props => {
+export const InlineForm: Story<FormProps> = (props) => {
   const { control, handleSubmit } = useForm();
   const onSubmit = (d: any) => {
     alert(JSON.stringify(d));
@@ -267,13 +282,18 @@ export const InlineForm: Story<FormProps> = props => {
           name={'name'}
           control={control}
           rules={{ required: 'This field is required', min: 10, max: 20 }}
-          render={({ field: { onChange, value }, fieldState: { invalid } }) => (
+          render={({
+            field: { onChange, value },
+            fieldState: { invalid, error },
+          }) => (
             <TextField
               onChange={onChange}
               value={value}
               validationState={invalid ? 'invalid' : undefined}
               aria-label={'Name'}
               placeholder={'e.g. drift monitor'}
+              errorMessage={error?.message}
+              aria-errormessage={error?.message}
             />
           )}
         />
@@ -302,8 +322,22 @@ export const InlineForm: Story<FormProps> = props => {
         <Controller
           name={'type'}
           control={control}
-          render={({ field: { onChange, value } }) => (
-            <Picker aria-label="Picker" defaultSelectedKey={'psi'}>
+          rules={{
+            required: 'This field is required',
+            validate: (value) => value !== 'psi' || 'Psi is not supported',
+          }}
+          render={({
+            field: { onChange, value },
+            fieldState: { invalid, error },
+          }) => (
+            <Picker
+              aria-label="Picker"
+              defaultSelectedKey={'psi'}
+              selectedKey={value}
+              onSelectionChange={onChange}
+              validationState={invalid ? 'invalid' : undefined}
+              aria-errormessage={error?.message}
+            >
               <Item key="psi">PSI</Item>
               <Item key="kl">KL Divergence</Item>
             </Picker>
@@ -326,6 +360,8 @@ export const InlineForm: Story<FormProps> = props => {
               aria-label={'time'}
               type="number"
               width={'static-size-900'}
+              errorMessage={error?.message}
+              aria-errormessage={error?.message}
             />
           )}
         />