Kavanaugh was confirmed with a 50-48 roll call vote in the Senate chamber over the weekend, after a controversial nomination process amid claims of Kavanaugh's alleged sexual assault and misconduct against women which resulted in an FBI investigation.
Protests continued as people banged on the Supreme Court building doors as Kavanaugh arrived to be sworn in.
Below, see how celebrities reacted to the news of his appointment.
Lady Gaga
Emily Ratajkowski
Reese Witherspoon
Lena Dunham
Ellen DeGeneres
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Kathy Griffin
Chelsea Handler