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It was an afternoon of family fun for the Stefani-Rossdale clan! Gwen, Gavin, their two kids Zuma and Kingston, and niece Stella Stefani attended the Elisabeth Glaser Pediatric AIDS Foundation’s 24th Annual “A Time for Heroes” event in Los Angeles to help raise money and awareness for the prevention of HIV transmission of to children. The kid-friendly function offered an array of activity stations, like skateboard demos, trampolines, a micro-race track, and arts and crafts. The event concluded with with performances by Jessica Sanchez and HIV activist Jamar Rogers. For more information about the organization head to www.pedaids.org. Plus, click the photo for more photos from this weekends parties.

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• Win Gwen Stefani’s Paige Denim Jacket!
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Ever the rock star, Gwen Stefani opted for an edgy twist on the classic jean jacket when she wore this two-toned topper by Paige Denim to a park in Los Angeles. The “Lenny” style is one of our new favorites: The dark, glossy finish on the sleeves comes from a smooth wax coating that provides a cool contrast to the traditional indigo hue. And it can be yours! InStyle teamed up with Paige Denim to give away the $229 piece to FIVE lucky readers. To enter to win, take a photo of yourself in your favorite denim look and tweet it to @InStyle with the hashtag #InStyleDenim. You have until June 13 to send through your entries, and winners will be chosen by June 20. So grab your jeans and start Tweeting!

For the official rules, scroll down.  More

After watching a screening of The Great Gatsby in 3-D, Gwen Stefani and Katy Perry made their way to the Top of the Standard in Lower Manhattan to party Gatsby-style with the cast, including stars Leonardo DiCaprio, Carey Mulligan, and director Baz Luhrmann. “I hope [the audience] takes away the desire to have some rocking out great parties, wear groovy frocks, play the soundtrack, and have a few glasses of champagne!” director Baz Lurhmann told InStyle.com at the screening, hosted by Quintessentially Lifestyle at the Modern Museum of Art. The Great Gatsby opens in theaters Friday, May 10. Click the photo for more.

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• See the Costumes from the Great Gatsby
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Jessica Chastain is an Oscar nominee, fashion plate, and, let’s face it, enviable redhead! So when she chatted with InStyle for our March issue‘s “Beauty Talk,” we had to ask her one very important question—is it natural? “Yes, and as a child I didn’t like it because it made me different. But as I grew older and more comfortable, it became a badge of honor,” she said. The actress revealed that when a role calls for a different hue—like when she went blonde for The Help—she always wigs it. But if she did make a change, she’d do a major one: “I’d go in a completely opposite direction: Gwen Stefani platinum!” Bombshell! For more on Chastain and beauty must-haves, turn to page 419 of InStyle‘s March issue, or download it on your tablet.

Plus, see Jessica’s beauty transformation!

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• Download the new issue on your tablet:
• 1. iPad
• 2. Nook
• 3. Kindle
• 4. Google Play

No Doubt lead singer and all-around rock star Gwen Stefani matched her shades to her signature bleached-blond ‘do while out and about in Los Angeles—and we found them! They’re Karen Walker’s Number One cat eye sunglasses in Vanilla, with wood grain frames and dark gray lenses. Shop them at lagarconne.com for $250. If they’re cool enough for Gwen, they’re cool enough for us!

Plus, shop more star style.

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