OK! Quick Pics: Leonardo DiCaprio Hangs With Giorgio Armani, John Mayer Looks Dapper In England and More!

Leonardo DiCaprio hung with the man of the hour at Armani's One Night Only fashion show in New York City.

Cody Simpson made all the girls squeal at the Pencils of Promise 3rd Annual Gala honoring leaders in international education.

Adam Levine took a break from The Voice to celebrate the launch of his Kmart Fall/Holiday 2013 men’s collection. Shop Adam's jeans and flannel shirt at Kmart locations nationwide and www.shopyourway.com/adamlevine.

Audrina Patridge embraced Halloween by visiting Knott's Scary Farm with her boyfriend Corey Bohan. The couple explored the Houdini inspired “Black Magic” maze and later hopped on the farm's rollercoasters. Knott’s Scary Farm is open now until November 2nd so make sure to get your tickets at www.knotts.com before it's too late!

Real Housewives of New York star Kelly Bensimon was all smiles at the launch of the Clos Cruiser by C. Wonder!

Check out Jenna Dewan-Tatum's sweet sneakers! The new mom rocked her rose gold PUMA kicks while taking a stroll through Central Park.

Mario Lopez and his wife Courtney spent quality time together this week while running errands. They even stocked up on Eppa Organic Sangriai—yum!

Joe Jonas was one of the many Hollywood A-listers who gathered at the inaugural Dream for Future Africa Foundation Gala.

John Mayer looked oh so dapper while visiting the Oxford Student Union in England!

We're not quite sure what Lady Gaga is doing (or what she's wearing), but the singer had all eyes out while out in Berlin.

Isla Fisher had a mommy-and-me date with her daughter Elula at Cheebo in Hollywood. Also, how adorable do their coordinating outfits look?

Kanye West kept things casual in a printed tee and flannel button down for a business meeting at the Hollywood Center Studios in Beverly Hills.