As expected, Miley Cyrus got crazy this year for her 21st birthday bash on Sunday, Nov. 24 (the day after her official birthday), her party featuring strippers, plenty of booze and oddly, an appearance from the popular Dr. Seuss character, the Lorax.

The bash took place after the American Music Awards - at which Cyrus performed her hit single "Wrecking Ball" in a very revealing, bizarre cat-themed outfit - at the Beacher's Madhouse at the Roosevelt Hotel in L.A.

Us Weekly insiders report that guests dined on a cake in the shape of a naked Miley Cyrus with marijuana leaves covering her private parts, and Cyrus and friends had tons of fun playing with customized party favors, including paper cut-outs of her face with her tongue characteristically sticking out and "I Love Miley" sunglasses. Not only was the Lorax in attendance, famous friends Kelly Osbourne, Wiz Khalifa, Amber Rose, Emma Roberts, Liam Payne and Niall Horan of One Direction, Ke$ha, and sister Brandi Cyrus (who had interviewed Miley on the red carpet earlier in the evening), also joined in on the star-studded event.

The morning after her official birthday, the newly 21-year-old posted a nearly nude selfie on Instagram of her lying in bed.

Billy Ray Cyrus reportedly bought his famous daughter a gift in the form of a $24,000 customized Can-Am Spyder motorcycle with her initials all over the body, according to Us Weekly, which she and her mother Trish took a joyride on over the weekend.

At the AMAs, Cyrus donned a relatively all-white Versus Versace suit before changing into an outlandish two-piece, high cut cat-print leotard and matching shoes paired with massively over-sized Alexis Bittar jewelry that she wore on-stage during her performance while a virtual cat cried and mimicked her movements on the projection screen behind her, tears running down its cartoonish face.

Click here to see photos of Cyrus's birthday morning-after selfie and her ride with mom Trish on her brand-new motorcycle, courtesy of father Billy Ray Cyrus, and click here for photos from Cyrus's birthday bash at the Roosevelt Hotel in Los Angeles.