Among the guests was a Liam, but apparently not ex-fiance Liam Hemsworth, who Miley famously invited to the fete. Instead, guests included One Direction's Liam Payne and Niall Horan, along with Tyler the Creator, Kelly Osbourne, Emma Roberts, Wiz Khalifa, Amber Rose and Cherie Daly.
Also appearing was The Lorax (yes, the Dr. Seuss character who speaks for the trees) a professional twerking team led by Amazon Ashley, and a horde of Miley's friends (and / or acquaintances) wearing masks with the "I'm not Hannah Montan any longer" girl's face on them.
There was booze flowing a'plenty. After all, Miley is now legal, when it comes to drinking. Her actual birthday was Saturday, Nov. 23, although the party took place after Sunday's American Music Awards.
Speaking of the AMAs, Miley didn't win anything. She did perform "Wrecking Ball" in front of a gigantic feline, though, and we have to wonder if Miley was making a statement about other terms for a cat.
Since her 20th year was a big one, with positive things -- and negative things, such as the aforementioned split with Hemsworth -- we have to ask, what will 21 bring Miley (aside from a legal way to get booze)?