Derek Hough and his sister Julianne joined Maria Menounos and other celebrities as they attended a huge Halloween bash in Beverly Hills Friday night. Love the costumes!

The trio, wearing their best costumes, also met up with the likes of Rosie Huntington-Whiteley, Alessandra Ambrosio and Julianne's boyfriend Ryan Seacrest at the star-studded event in the hills. If only we could get a peek at what Ryan was wearing!

Now that's one hot cat!

Fergie gave a sneak peek at what she might be wearing this Halloween when she tweeted a provocative photo in her sexy form-fitting leopard print costume on Friday. "Getting excited 4 #Halloween! HEEeeRE naughty kitty kitty, HEEeeRE naughty kitty kitty," the Black Eyed Peas frontwoman posted to her Twitter account.

The 37-year-old singer has been known for her daring outfits but she's certainly outdid herself this time and we're sure hubby Josh Duhamel would agree!

Leave it to these ladies to do it right!

Last night, Rosie Huntington Whiteley and Alessandra Ambrosio threw on their hottest Halloween outfits as they headed to a private bash in Beverly Hills.

Both models looked sizzling in their sexy attire on the way to the exclusive event, which also included celebrity guests Derek and Julianne Hough and Ryan Seacrest. Talk about star power!

Someone's bouncing back!

Seal got in the Halloween spirit with a new girl as the pair donned his and hers basketball inspired outfits to a private party in Beverly Hills Friday night.

The 49-year-old singer hasn't been out and about much since his publicized divorce with ex-wife Heidi Klum. Wonder if his new squeeze can rival her in the Halloween costume department?

Leah Dunham, creator and star of HBO's Girls, has taken her election day stance as the actress released an Obama-sponsored video Your First Time.

The suggestive title refers to the 26-year-old's first time voting, which came in 2008 when Barack Obama went up against John McCain.

"My first time voting was amazing. It was this line in the sand — before, I was a girl; now I was a woman. I went to the polling station, I pulled back the curtain, I voted for Barack Obama," Dunham says in the informative ad.

Check out the video and don't forget to vote on Tuesday, Nov. 6.

That's one well dressed family!

On Friday, Kim Kardashian joined sister Kourtney and her son Mason Disick on their journey to the grocery store in Miami.

The eldest Kardashian sibling has been sticking close to her family lately, but that could change as rumors of an impending engagement between her and Scott Disick begin to arrive. Let's see if he puts a ring on it!

Someone likes to dress up!

Paris Hilton's hotness was on full display when she put on her sexiest Alice in Wonderland costume to attend a private Halloween party in Beverly Hills last night.

The stunning blonde heiress, who was with boyfriend River Viiperi and some friends, has always been excited as she recently confessed her love for the festive fall holiday and we can see why. She sure knows how to rock a Halloween costume right!

Reports have surfaced that Joe Simpson, Jessica Simpson's father, has been allegedly having an affair with an aspiring 21-year-old male model.

A source recently told Radar Online that Joe and Bryce Chandler Hill have been dating on and off for about a year since being introduced by a mutual friend who is close to his famous offspring Jessica and Ashlee Simpson.

"Jessica had absolutely no clue that her father was gay, not even the slightest inkling," the source said. "She thinks she has very good gaydar, especially since a lot of her friends are gay, but she did not see this coming at all."

The source added that despite what she has learned, Jessica's going to stand by him and support his decision. "After all, he’s still her father and Joe’s always been there for Jessica whenever she’s needed him," the source said. "And not just as a father, but as her manager too."

The allegations arrive just days after the 54-year-old and wife of 34 years Tina Simpson filed for divorce, adding fuel to the speculation. The pair reportedly split earlier this year and have put their Los Angeles home up for sale.