diff --git a/src/file-uploader-beta/__tests__/file-uploader-beta.test.tsx b/src/file-uploader-beta/__tests__/file-uploader-beta.test.tsx
index 75d4a65bf0..fcf6a52163 100644
--- a/src/file-uploader-beta/__tests__/file-uploader-beta.test.tsx
+++ b/src/file-uploader-beta/__tests__/file-uploader-beta.test.tsx
@@ -27,6 +27,45 @@ describe('FileUploaderBeta', () => {
     expect(container).toBeDefined();
   });
 
+  it('renders gracefully with different style override types', () => {
+    const { container } = render(
+      <>
+        <FileUploaderBeta
+          overrides={{
+            ButtonComponent: {
+              props: {
+                overrides: {
+                  BaseButton: {
+                    style: {
+                      backgroundColor: 'red',
+                    },
+                  },
+                },
+              },
+            },
+          }}
+        />{' '}
+        <FileUploaderBeta
+          overrides={{
+            ButtonComponent: {
+              props: {
+                overrides: {
+                  BaseButton: {
+                    style: ({ $theme }) => ({
+                      outline: `${$theme.colors.warning600} solid`,
+                      backgroundColor: $theme.colors.warning600,
+                    }),
+                  },
+                },
+              },
+            },
+          }}
+        />
+      </>
+    );
+    expect(container).toBeDefined();
+  });
+
   it('throws errors when invalid props are passed in', () => {
     const original = console.error;
     console.error = jest.fn();
diff --git a/src/file-uploader-beta/file-uploader-beta.tsx b/src/file-uploader-beta/file-uploader-beta.tsx
index a192ea0317..595f67c5e5 100644
--- a/src/file-uploader-beta/file-uploader-beta.tsx
+++ b/src/file-uploader-beta/file-uploader-beta.tsx
@@ -26,7 +26,7 @@ import {
   StyledTrashCanFilledIconContainer,
 } from './styled-components';
 import { FILE_STATUS, FILE_STATUS_TO_COLOR_MAP } from './constants';
-import { formatBytes } from './utils';
+import { destructureStyleOverride, formatBytes } from './utils';
 import AlertIconComponent from '../icon/alert';
 import CircleCheckFilledIconComponent from '../icon/circle-check-filled';
 import PaperclipFilledIconComponent from '../icon/paperclip-filled';
@@ -275,7 +275,7 @@ export default function FileUploaderBeta(props: FileUploaderBetaProps) {
               style: {
                 marginTop: 0,
                 // @ts-expect-error
-                ...props.overrides?.ButtonComponent?.props?.style,
+                ...destructureStyleOverride(props.overrides?.ButtonComponent?.props?.style, theme),
               },
               overrides: {
                 // @ts-expect-error
@@ -285,8 +285,11 @@ export default function FileUploaderBeta(props: FileUploaderBetaProps) {
                   ...props.overrides?.ButtonComponent?.props?.overrides?.BaseButton,
                   style: {
                     backgroundColor: theme.colors.backgroundPrimary,
-                    // @ts-expect-error
-                    ...props.overrides?.ButtonComponent?.props?.overrides?.BaseButton?.style,
+                    ...destructureStyleOverride(
+                      // @ts-expect-error
+                      props.overrides?.ButtonComponent?.props?.overrides?.BaseButton?.style,
+                      theme
+                    ),
                   },
                 },
               },
@@ -296,7 +299,7 @@ export default function FileUploaderBeta(props: FileUploaderBetaProps) {
             style: {
               ...theme.typography.ParagraphMedium,
               color: theme.colors.contentTertiary,
-              ...props.overrides?.ContentMessage?.style,
+              ...destructureStyleOverride(props.overrides?.ContentMessage?.style, theme),
             },
           },
           FileDragAndDrop: {
@@ -309,7 +312,14 @@ export default function FileUploaderBeta(props: FileUploaderBetaProps) {
               paddingLeft: theme.sizing.scale600,
               paddingRight: theme.sizing.scale600,
               paddingTop: theme.sizing.scale600,
-              ...props.overrides?.FileDragAndDrop?.style,
+              ...destructureStyleOverride(props.overrides?.FileDragAndDrop?.style, theme),
+            },
+          },
+          Root: {
+            style: {
+              zIndex: 1,
+              ...destructureStyleOverride(props.overrides?.Root?.style, theme),
+              ...props.overrides?.Root?.style,
             },
           },
         }}
@@ -475,7 +485,11 @@ export default function FileUploaderBeta(props: FileUploaderBetaProps) {
         </LocaleContext.Consumer>
       )}
       {props.hint && (
-        <Hint data-baseweb="file-uploader-beta-hint" {...hintProps}>
+        <Hint
+          data-baseweb="file-uploader-beta-hint"
+          $fileCount={props.fileRows.length}
+          {...hintProps}
+        >
           {props.hint}
         </Hint>
       )}
diff --git a/src/file-uploader-beta/styled-components.ts b/src/file-uploader-beta/styled-components.ts
index 6f0168b44e..f307268390 100644
--- a/src/file-uploader-beta/styled-components.ts
+++ b/src/file-uploader-beta/styled-components.ts
@@ -9,9 +9,26 @@ import type { StyleProps } from './types';
 
 export const StyledFileRow = styled<'li', StyleProps>('li', (props) => {
   const {
-    $theme: { sizing },
+    $theme: { animation, sizing },
   } = props;
   return {
+    animationDuration: animation.timing400,
+    animationFillMode: 'forwards',
+    animationIterationCount: 1,
+    animationTimingFunction: animation.easeOutQuinticCurve,
+    animationName: {
+      '0%': {
+        transform: 'translateY(-32px)',
+        opacity: 0,
+      },
+      '50%': {
+        opacity: 1,
+      },
+      '100%': {
+        transform: 'translateY(0px)',
+        opacity: 1,
+      },
+    },
     paddingTop: sizing.scale500,
     paddingRight: sizing.scale500,
     paddingBottom: sizing.scale500,
@@ -117,9 +134,20 @@ StyledFileRowUploadText.displayName = 'StyledFileRowUploadText';
 
 export const StyledFileRows = styled<'ul', StyleProps>('ul', (props) => {
   const {
-    $theme: { borders, sizing },
+    $theme: { animation, borders, sizing },
   } = props;
   return {
+    animationDuration: animation.timing500,
+    animationIterationCount: 1,
+    animationTimingFunction: animation.easeInOutQuinticCurve,
+    animationName: {
+      '0%': {
+        transform: 'translateY(-32px)',
+      },
+      '100%': {
+        transform: 'translateX(-0px)',
+      },
+    },
     ...borders.border200,
     borderRadius: borders.radius400,
     borderWidth: sizing.scale0,
@@ -133,10 +161,28 @@ StyledFileRows.displayName = 'StyledFileRows';
 
 export const StyledHint = styled<'div', StyleProps>('div', (props) => {
   const {
-    $theme: { colors, typography },
+    $fileCount,
+    $theme: { animation, colors, typography },
   } = props;
   let fontColor = colors.contentTertiary;
+  const animations =
+    $fileCount > 0
+      ? {
+          animationDuration: animation.timing500,
+          animationIterationCount: 1,
+          animationTimingFunction: animation.easeInOutQuinticCurve,
+          animationName: {
+            '0%': {
+              transform: 'translateY(-32px)',
+            },
+            '100%': {
+              transform: 'translateX(-0px)',
+            },
+          },
+        }
+      : {};
   return {
+    ...animations,
     ...typography.font100,
     color: fontColor,
   };
diff --git a/src/file-uploader-beta/types.ts b/src/file-uploader-beta/types.ts
index c852271968..6c0945915e 100644
--- a/src/file-uploader-beta/types.ts
+++ b/src/file-uploader-beta/types.ts
@@ -6,17 +6,16 @@ LICENSE file in the root directory of this source tree.
 */
 import type { Override } from '../helpers/overrides';
 import type { FILE_STATUS } from './constants';
-import type { FileUploaderOverrides, FileUploaderProps } from '../file-uploader/types';
+import type {
+  FileUploaderOverrides,
+  FileUploaderProps,
+  StyleProps as FileUploaderBasicStyleProps,
+} from '../file-uploader/types';
 
-export type StyleProps = {
-  $afterFileDrop: boolean;
+export type StyleProps = FileUploaderBasicStyleProps & {
   $alt: string;
   $color: string;
-  $disabled: boolean;
-  $isDragActive: boolean;
-  $isDragAccept: boolean;
-  $isDragReject: boolean;
-  $isFocused: boolean;
+  $fileCount: number;
   $src: string;
 };
 
diff --git a/src/file-uploader-beta/utils.ts b/src/file-uploader-beta/utils.ts
index 4f7a9964b0..7390308381 100644
--- a/src/file-uploader-beta/utils.ts
+++ b/src/file-uploader-beta/utils.ts
@@ -4,6 +4,16 @@ Copyright (c) Uber Technologies, Inc.
 This source code is licensed under the MIT license found in the
 LICENSE file in the root directory of this source tree.
 */
+import type { Theme } from '../styles';
+
+export const destructureStyleOverride = (styleOverride: any, theme: Theme) => {
+  if (typeof styleOverride === 'function') {
+    return styleOverride({ $theme: theme });
+  } else {
+    return styleOverride;
+  }
+};
+
 export const formatBytes = (bytes: number): string => {
   if (bytes === 0) return '0 bytes';
   const k = 1000;