Paris Hilton 33rd Birthday Party Celebration Red Carpet Arrivals in Hollywood

Paris Hilton was working some kind of porn version of Barbie in a bright candy-pink frock and tiara with the highest split on a dress we think we've ever seen for her 33rd birthday bash.

We get it, she's got a good figure, but we REALLY hope she was wearing underwear. However, it REALLY looks like she isn't.

The heiress celebrated her 33rd with a blow-the-budget bash in LA. The dress she chose also appeared to feature some kind of nod to Barbarella with a futuristic pink cutout bust.

Paris was celebrating at Greystone Manor in LA, where she was also set to perform a DJ set. She shared the sultry poster for the bash on Instagram, writing: "Hey LA! Tonight is the night! So excited to celebrate my birthday & play for you all at @Greystone_Manor tonight! It's going to be an insane party!