Katy Perry And John Mayer Rekindle Flame At Memorial Day BBQ Bash

It seems like instead of wining and dining this week, your favorite celebrities were spotted at their homes celebrating Memorial Day and the start of summer with their families and A-lister pals! 

Restaurant Buzz

Sir Paul McCartney and wife Nancy Shevell dined at Bemelmans Bar at The Carlyle. [NY Post]

Fast and Furious' Elsa Pataky took daughter India to Geoffrey's for lunch with her mom in Malibu, Calif. [JustJared]

Shia LaBeouf headed to Crave Café in Sherman Oaks, Calif., for a Frappuccino to go. [JustJared]

Seen & Heard

Jessica Alba and daughter Haven went grocery shopping at Whole Foods in Los Angeles. [US]

Cameron Diaz had dinner aboard a yacht in Monte Carlo, Monaco. [US]

Octavia Spencer has apparently lost 20 pounds thanks to Sensa. [The Daily Meal]

Colton Haynes tweeted a photo of a sandwich with two dogs drooling nearby with a caption that read, "Feeling very popular right now." [Instagram/ColtonLHaynes]

Steven Tyler gardened at his home. [WhoSay/StevenTyler]

Katy Perry hosted a BBQ Bash at her Hollywood Hills home and apparently was rekindling the flame with ex-beau John Mayer. [US]

Mark Wahlberg headed to Bristol Farms market to stock up on groceries for Memorial Day weekend in Beverly Hills. [JustJared]

Jimmy Fallon thew a birthday party for his wife Nancy at their Sagaponack, N.Y., home. The fare was from Blue Ribbon, Nancy's favorite, and guests included Justin Timberlake and Jessica Biel, Lorne Michaels, Jeff and Caryn Zucker, as well as several Saturday Night Live members. [TheDailyMeal]

Clive Davis hosted a lavish dinner for more than 60 guests over Memorial Day weekend at his home in Pound Ridge, N.Y. Famous faces included Joan Rivers, Patti LuPone, Neil Sedaka, and Valerie Simpson as well as others. [NY Post]

Celebrities came out in droves for producter Joel Silver's annual Memorial Day party at  his home in Malibu, Calif. Guests included Diane Kruger and Joshua Jackson, Gwen Stefani and her family, Sean Penn, Kate Beckinsale, Dianna Agron, Rob Lowe, John Favreau, Minnie Driver, Colin Farrell, and Tobey Maguire and his family. [PopSugar]