Find out what Halloween costumes Nikki Reed, Chaske Spencer, and more stars will be wearing this weekend! Check it out on PopSugar Rush!

Matthew McConaughey took a break from playing in China's Mission Hills Star Trophy tournament this evening to attend a red carpet event with Camila Alves. He's spent the last few days golfing with Hugh Grant, Catherine Zeta-Jones, Christian Slater, and Michael Phelps as part of the event, designed to bring celebrities and sports stars together. Matthew's overseas after logging time last weekend with his family in Austin, where his j.k.livin foundation continued to support a group of kids participating in a half marathon. Matthew may be able to share a few running tips with Michael Phelps, who's apparently been getting Subway's Jared Fogle into shape for the upcoming New York City Marathon.

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Shia LaBeouf whipped off his shirt in between scenes on the set of Transformers 3 in LA Thursday.

Matthew Morrison and Lea Michele got into the Halloween spirit last night, playing Brad and Janet in a benefit performance of The Rocky Horror Picture Show at LA's Wiltern Theater. The Glee cast just took on the spooky cult classic in this week's episode, and Matt and Lea were joined by celebs including Evan Rachel Wood and Jack Nicholson for yesterday evening's live show. The duo made a cute couple on stage, but Matthew sparked romance rumors in real life recently when he was spotted out on the town with Cameron Diaz. Matthew laughed off the stories, saying he and Cameron are "just friends" and were introduced though future Glee guest star Gwyneth Paltrow.

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Jennifer Garner spent one-on-one time with both her girls in LA today, picking up Violet from school and heading to the playground with a very smiley Seraphina. The trio have been all about their afternoon outings, with a trip to the library on Tuesday, stops for a sweet treat, and finding fun rainy-day activities. They're gearing up for this weekend's festive holiday, and while costume decisions hadn't yet been made earlier this month, the family is sure to get decked out this Halloween like years past. Violet's been a lamb and a dog before, and this year she's in charge of picking out what little sister Seraphina will wear, too. If you're still stumped about your costume, check out all the great ideas for moms-to-be, kids, and couples!

More of the Garner-Affleck girls, so read more

Gisele Bundchen stepped out in NYC on Thursday night.

Britney Spears popped up through the sunroof to check on her bodyguard, who was grabbing her coffee at a Starbucks in Calabasas yesterday. Usually Britney can handle her own caffeine fix, but this time she stayed in her car and let someone else brave the line. Halloween is days away, and while Miss Spears is a popular costume choice, she's known to take advantage of the chance to dress up as something else. In 2007 she was a bright pink cat as well as a sexy pirate, and in 2008 a long wig completed her look, though last year she was busy preparing for her Australian tour and skipped all the big parties. If Britney is still figuring her weekend out, we have lots of last-minute easy ideas on how to get in the spooky holiday spirit!