Mila Kunis is taking Hollywood by storm following her star-making role in Black Swan, but that doesn't mean she can't still laugh at herself.

And it turns out the phrase "It girl" is one that just cracks her up. "It makes me laugh!" she told our own Giuliana Rancic. "It does, to be honest. It's crazy being here; I don't know how I got here!"

The Swan starlet is also mystified about her "Sweet Lips" nickname, courtesy of tonight's SAG winner Natalie Portman... 

"I don't know!" Kunis told Giuliana about the origin of the sexy moniker. "Why don't you ask [Natalie]?

"I literally sat at the table [at the Golden Globes] and was like, 'Oh no!' And I paid for it the rest of the night," Kunis told us.

Check out the video above to see whether Mila has her own friendly name for Portman.

MORE VIDEO: Even at age 15, Natalie Portman was dancing on stage...and singing too!

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