There's no surprise that Miley Cyrus celebrated her 21st birthday with booze, celebrities and strippers this weekend, however, it may surprise some that she also featured a special guest appearance from Dr. Seuss' The Lorax at her party.

According to Us Weekly, the singer threw a wild birthday bash on Sunday, Nov. 24 at Beacher's Madhouse in West Hollywood following the American Music Awards where she performed her hit song "Wrecking Ball." During her emotional and bizarre performance, she wore a high-cut two piece covered in a cat print with Alexis Bittar jewelry while a giant image of a singing and crying cat moved on the screen behind her.

The former Disney darling also celebrated turning 21 with a birthday cake that was shaped like a nude version of herself with pot leaves covering her privates.

An inside source told Us that Miley appeared to have lots of fun with friends at the bash, which featured fun favors such as paper cut-outs of the singer's face with her tongue sticking out and "I Love Miley" sunglasses.

Celebs in attendance included Kelly Osbourne, Wiz Khalifa, Amber Rose, Emma Roberts, One Direction's Liam Payne and Niall Horan and Ke$ha.

On Cyrus' actual birthday, which was Saturday, Nov. 23, she received a $24,000 customized Can-Am Spyder motorcycle from her father, country singer Billy Ray Cyrus, reports PerezHilton.com.  And as if the motorbike wasn't sweet enough to begin with, Billy Ray also had his daughter's new set of hot wheels customized with her initials all over the body.