Miley Cyrus turned 21 years old on Saturday.
But the singer waited until Sunday to fully celebrate the occasion, first lip-synching alongside a cat at the American Music Awards and then renting out Beacher's Madhouse at the Roosevelt Hotel in Los Angeles.
Following a morning in bed with her dogs, that is.
According to TMZ insiders, the birthday party involved a lot of alcohol… many famous famous… and the beloved Dr. Seuss character The Lorax.
With Kelly Osbourne, party hats and many champagne bottles all in attendance, check out a video from the shindig now:
Join THG in wishing Cyrus a very happy 21st birthday and let's all raise a glass and stick out our tongues in honor of the headline-making star!