Tristan Thompson throws an incredible 33rd surprise 33rd birthday bash for Khloe Kardashian

Khloe Kardashian just got the best birthday surprise -- an incredible bash with all her friends and family hosted by her new boyfriend, NBA star Tristan Thompson.

The reality star, who turns 33 on Tuesday, looked very pleasantly surprised on Sunday night when she hit the Blind Dragon nightclub in Los Angeles and saw her sisters, Kim Kardashian, Kylie Jenner, Kourtney Kardashian and Kendall Jenner inside.

Tristan definitely pulled out all the stops for KoKo's big night too -- he hauled in gold donuts, cakes, cookies, cake pops, and Kit-Kat bars, and also put together a super cool photobooth.

Naturally, all the sisters documented the evening on their Snapchat.

Khloe looked incredible at the bash and donned a sexy gold dress that showed off her sleek physique. Khloe has been open about how much time she's been working on her body and keeping herself in excellent shape, and Sunday night it definitely showed.

Throughout the evening, Khloe partied with her sisters and also packed on the PDA with Tristan. In one photo, they were spotted making out.

It looks like the whole family enjoyed their night on the town!