Pregnant with her third child, Kate Winslet hid her baby bump in a little black dress while holding hands with husband Ned Rocknroll in London on Sept. 5. Credit: Splash News Online

Clever, Kate Winslet! While making her way through Heathrow Airport in London on Thursday, Sept. 5, the 37-year-old pregnant actress hid her baby bump from photographers by wearing a loose-fitting little black dress -- but she couldn't conceal her pregnancy glow.

The Oscar-winning star had a big smile on her face while holding husband Ned Rocknroll's hand as they made their way through the airport. Winslet, wearing sensible flats, further camouflaged her burgeoning belly by accessorizing her short-sleeved dress with a leopard-print scarf and large handbag. The Mildred Pierce actress also held her hand over her tummy for even more coverage.

Winslet and Rocknroll, who secretly wed in December 2012, announced they were expecting their first child together in June. The British beauty is already mom to daughter Mia, 12, and son Joe, 9, from two previous marriages.

The actress has had some practice in the past hiding her pregnancy. She had to cover her belly while working on the upcoming movie Divergent in Chicago in July. 

"I'm holding up fine. I'm pregnant, but it's not at the point where it becomes impossible," Winslet told USA Today while on set, icing her feet at the time. "Sometimes you just have to roll with it."