Brad Pitt and Angelina Jolie took their kids ice skating in Los Angeles to celebrate the seventh birthday of their twins, Knox and Vivienne.

The rest of the brood also joined in the fun: Maddox, 13, Pax, 11, Zahara, 10, and Shiloh, 9. Some of Knox and Vivienne's friends also joined the family in the outing.

"They rented a bus and headed for an afternoon of ice-skating at Iceland Ice Skating Center," a source source told Us Magazine. "Knox and Viv were bundled up with snow hats and mittens. They were really excited about it.

"Everyone skated for about two hours and they tried out special bumper cars on the ice. They were spinning around getting dizzy and had a blast. Some of the kids were holding hands as they skated and it was really sweet."

There have been rumors that Brad Pitt and Angelina Jolie have been having troubles in their marriage amid financial problems allegedly caused by their lavish lifestyle. Is the couple trying to cheeri up their kids to distract them from their parents' relationship problems?

A few days before, Brad Pitt and Angelina Jolie took the kids to Subway to get takeout meals.

"We're told Brad, Angie and a few of their six kids cruised into the sandwich shop in Glendale, CA over the weekend," TMZ reported.

"If you're wondering what it takes to feed a crew that size -- 2 Meatball Marinara footlongs, 1 Chicken Teriyaki sandwich, and a few kids' meals. Total tab ... $44, and Pitt made the sandwich artist's day with a hefty $6 tip! Kinda unheard of at Subway."

Brad Pitt and Angelina Jolie also made headlines when they took their kids to France via economy flights last month.

"Brad and Angelina also were seen putting their hand luggage into overhead storage as their children settled down for the short flight from Paris to the cote d'Azur location," Daily Mail reported. "They also patiently waited along with other passengers for two hours at Charles de Gaulle Airport before departing."