InstagramKate Hudson certainly wasn't afraid to bring the sex appeal to her star-studded Halloween bash in Los Angeles last night, which she chose to make a mother-daughter affair.
The 35-year-old stunner showed off her insane abs in a super-hot biker chick costume on Thursday at her A-list party in Hollywood, where the blond beauty and pals, including mom Goldie Hawn, opted for a very sexy female Sons of Anarchy takeover.
"Mother of Anarchy is taking her daughters to a little party.... #HappyHalloween #hudsons #partytime," the Almost Famous stunner captioned the shot in which she's striking a seductive pose with five of her gorgeous gal pals along with her famous mama, who is working those leather pants.
Ryder and Bingham's mother channeled her sexy side, and clearly, she got the seductive Halloween costume memo. Flaunting her rock-hard abs and killer bod, the actress left little to the imagination in a leather-studded crop top and matching hot pants.
According to an eyewitness, Hudson was spotted dancing up a storm with Derek Hough at the party while her fiancé Matt Bellamy hung with Zach Braff, who came with Donald Faison and his pregnant wife CaCee Cobb.
"It was a Sons of Anarchy themed party held at both of Kate Hudson's homes in Pacific Palisades," a source tells E! News. "All of the decor was Sons of Anarchy themed. There were motorcycles lined up in front and the inside was decorated to like a motorcycle club. There were huge skulls everywhere that were holding flowers and skull heads on all of the tables."
The source added that there "were white lights in all of the trees and DJ Tony Martinez was spinning hip hop music like Big Sean and 2 Chainz. There was also one part of his set where he did a flashback segment and played older Gwen Stefani and pop songs."
While Hudson and her mama may have stolen the costume show, they certainly weren't the only celebs in attendance at the spooky soiree.
Newly single Chris Martin, who recently split with Jennifer Lawrence, was snapped all smiles chatting with two lovely ladies, including Sara Foster, who was scantily clad in a leotard. Gwyneth Paltrow's ex chose not to sport a costume, and was instead rocking his signature casual getup, which consisted of khaki slacks, a long sleeved shirt and a blue baseball cap.
"Chris Martin was one of the only people who didn't dress up," the source reveals. "He was hanging out and talking to a few girls. He was joking around and laughing but not overly flirtatious."
Lily Allen, meanwhile, opted for a more controversial costume, dressing as Dr. Luke in the wake of his ongoing sexual assault lawsuit with Kesha. The British pop star wore green scrubs and a stethoscope and presumably, will raise some eyebrows with her "Dr. Luke - gynaecology department" name tag.
Additional celebs at the bash included Katy Perry, who dressed as a giant Flamin' Hot Cheeto and was seen spending ample time chatting with Goldie Hawn, as well as Orlando Bloom, Jessica Alba, Courteney Cox and fiancé Johnny McDaid, Tobey Maguire and Jen Meyer, Leah Michelle and Matthew Peltz, Gwen Stefani and Gavin Rossdale, Jessica Alba, Chris Martin, Kurt Russell and Goldie Hawn, Katy Perry, Sarah Hyland, Nicole Richie, Liberty Ross, Lily Allen, Arnold Schwarzenegger, Rachel Zoe, Diana Agron, Zach Braff, Adam Sandler, David Spade and Maria Menounos.
"It was a huge party with tons of stars," the insider said. "Kate planned it to make sure it didn't conflict with anything else going on and it worked out well. Everyone had a great time and didn't want to leave until the police broke it up" (which occurred around 1 a.m.).
—Additional reporting by Marc Malkin and Melanie Bromley