Halloween '10 Round-up!

Published on Monday, November 01 2010

Written by Katie Marzullo

"How I Met Your Mother" star Alyson Hannigan attends a private party with her hubby Alexis Denisof and their daughter Satyana.

Anne Hathaway gets wild at a NYC masquerade ball.

Tennis legend John McEnroe, rock legend Patty Smyth, and all-around legend Bette Midler attend a benefit gala.

The Bush twins, Jenna and Barbara, glam it up for a UNICEF masquerade ball.

"Cougar Town" star Busy Philipps and daughter Birdie Leigh are matching Tinker Bells at a children's foundation benefit in Santa Monica.

Ringmaster Carmen Electra is in charge as she hosts a Hustler Club event in Vegas.

Ciara pulls double-duty, celebrating both Halloween and her b-day dressed as Storm from the "X-Men".

"Jersey Shore"'s Pauly D lets his hair down and shows off his Bieber Fever at the Palms Hotel & Casino in Vegas.

"Lost"'s Jorge Garcia and Nicole Scherzinger show their spirit at a 35th anniversary tribute party to Rocky Horror Picture Show.

Snooki pays homage to her favorite sandwich garnish at the Mirage Resort Casino in Vegas.

Tori Spelling is fierce in feathers at a children's benefit in Santa Monica.

Chord Overstreet and Harry Shum Jr. help Matthew Morrison celebrate his b-day Halloween-style at a vitaminwater-sponsored event at Voyeur.

Christina Aguilera was also on hand for Matthew Morrison's bash...

...as was Chad Michael Murray, showing off his best Billy Idol sneer.

Wee Man gets his Irish on at the Dublin premiere of Jackass 3D.

Lisa Rinna and Harry Hamlin got some 'splainin' to do dressing as Lucy & Desi at a children's benefit.

No stranger to this holiday from way back, Halloween scream queen Jamie Lee Curtis shows off her team spirit at a children's benefit.

Kim Kardashian takes a detour from grandma's house to hit up Heidi Klum's Halloween bash.

Janet Jackson rocks the Prince 'stache at a NYC masquerade ball.

Tell us how you spent your Halloween!

Images via WENN and WireImage.

- Katie Marzullo, YH Staff Editor

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