Halloween is officially over -- and last night, there were A TON of amazing costumes from your favorite celebs.

Kelly Osbourne killed it at "Carrie," Rihanna was feeling blue as a "Zombie Chola," Carmen Electra showed serious cleavage as Rayne from "Bloodrayne" and, thankfully, there were no more Miley Cyruses!

While most celebs preserved their modesty, Nicki Minaj wore as little clothing as possible, dressing as what she says was a "cop." Check out the pic in the gallery -- we've never see a cop like that before!

There were some cute kid moments with Sandra Bullock and BFF Melissa McCarthy, Alyson Hannigan and her adorable little Irish family and newly-pregnant Kendra Wilkinson with son Hank Jr. too.

And then there's Demi Lovato. What a creepy costume, right?!

Take a look at all the photos above -- who was your favorite?

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