It looks like many Celebrities had a great time time this Halloween!  Many attended Mariah Carey’s Party at the M2 Ultra Lounge in NYC and some were partying it up in Vegas or Los Angeles.  One thing is clear is that they take the day pretty seriously, by the looks of some of these costumes.

CoCo and Rihanna got sexy at Mariah’s Party.

Anna McCord and her sisters Angel and Rachel were totally cute as they posed at the TABU Ultra at the MGM Hotel

Mariah Carey’s Angel poses with Angie Martinez and Miss Info’s Salt and Pepper.

Lamar Odom and his new Bride Khloe Kardashian look pretty sad in their costumes as they headed out for Halloween.  I guess the Honeymoon is over?

Gwen Stefani and hubby Gavin Rossdale took their luvcubs out trick or treating.  Can We say Total Cuteness?

Beyonce and Friend pose in their costumes.  Having fun?

Nurse Kimora Lee Simmons has just the right medicine for her Hubby Dr. Djimon Hounsou

Christina Aguilera and son Max go Trick Or Treating.

Mariah and hubby Nick came as Angels.  Cute

LMAO @ Terrance and Rocsi as Lil Wayne and Lady Gaga!

And Last But never least, Latoya Jackson.  Latoya did good work on Saturday and served Millions of Milkshakes in Hollywood.  Okay, what is Latoya?  She kind of looks like a Martian?

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