Taylor Swift, Katy Perry and John Mayer Get Drake’s 'Dirty Thirty' Party Dirtier!

Drake celebrated his 30^th birthday in a full-blown star-studded event. Stars like Jamie Foxx, Shay Mitchell, Zoe Kravitz, Taylor Swift, Katy Perry and John Mayer among others. Wait, What?! Indeed! Taylor Swift, Katy Perry, and John Mayer in ONE room.

Drake partied it up on LA hotspot Delilah on Sunday with a menu from Carbone. Guests sipped Drake's Virginia Black whiskey drinks and signature event drink aptly named "Champagne Papi". But what about Taylor Swift, Katy Perry and John Mayer in one room?

Let's recap. Taylor Swift dated John Mayer and when they broke up, Taylor Swift wrote "Dear John". John Mayer responded that he felt humiliated when he learned the song was about him. Taylor Swift and John Mayer in good terms? No.

Taylor Swift and Katy Perry were good friends when a feud about backstabbing and sabotaging concerts by stealing back-up dancers broke up their friendship. The two singers are still sniping with each other in social media. Taylor Swift and Katy Perry in good terms? No.

Katy Perry and John Mayer dated then broke up and dated again. Currently, Katy Perry's in a blooming romance with Orlando Bloom Katy Perry and John Mayer in good terms? Maybe.

Taylor Swift, Katy Perry, and John Mayer in one room could only end in disaster. Thankfully, aside from an awkward moment when the three learned of each other's attendance at the party, there was not one drop of drama. Katy Perry and John Mayer were even seen catching up with each other. Taylor Swift stayed away from the two and partied it up with Karlie Kloss and the Haim sisters at the other side of the room.

The party continued and the birthday boy had a blast. Later on the night, Jamie Foxx serenaded the guests and Drake announced that he would be releasing "More Life", his new album, this December. Three songs from the album were also released to celebrate Drake's birthday.