You always have to be careful when pairing a short, flowing dress/skirt with a windy day — especially if you're famous and cameras tend to follow you around.

Actress Isla Fisher (Wedding Crashers; Definitely, Maybe; Confessions of a Shopaholic) was spotted holding a balloon as she got into a car in North London on August 3. She and husband Sacha Baron Cohen (Borat) have two daughters, ages 5 and 2, and it looked like they may have been at a kids' party of some kind.

Credit: INFphoto.com Photo: Isla Fisher Flashes Underwear in London

As Isla was photographed, a gust of wind whipped up her skirt, revealing her gray underwear. It happens to the best of us! Not that we all look this good when the wind catches us unaware.

Isla, 37, recently told Fitness she gained 70 pounds with her second child, who was born in 2010. She slowly lost the weight by breast-feeding, hiking and working with a trainer. Now she keeps in shape with yoga, although she said she gained 15 pounds for her role in The Great Gatsby. That weight "mainly manifested itself in my boobs, which was very exciting," she said. "Sadly, that's gone now."

She looks pretty great — and since she’s married to Borat, she probably has more than enough of a sense of humor to laugh off a booty boo-boo. At least she was the one flashing this time instead of him!

Source: Us Weekly