Celebrity couples & Halloween..

Adam Levine and Ex Anne V pose inside the annual Maroon 5 & Bacardi Halloween bash at the Hollywood Forever Cemetery on October 31, 2011.

Billy Bush dressed as Katie Holmes and Kit Hoover is dressed as Suri Cruise for Halloween on Access Hollywood Live on October 29, 2010.

Jessica Alba and Cash Warren in Los Angeles on October 29, 2011.

Matt Lauer and Ann Curry: They dressed as Prince William and Kate Middleton — on the set of NBC’s ‘Today’ 2011 Halloween Celebration at Rockefeller Plaza in New York City on October 31, 2011.

Nick Cannon and Mariah Carey: Cookies and milk?

Coco and Ice-T: Busty nurse and a mad scientist?

Christina Aguilera and Jordan Bratman.

Heidi Klum and Seal: These two are no longer together but their Halloween costumes were EPIC.

Paris Hilton and Doug Reinhardt

Melissa Rycroft and Tye Strickland dress up as the Flintstones