October 14, 2013 11:55 AM

Emily Blunt‘s rep says she’s expecting her first child “in just a few months,” and she’s certainly got the pregnancy glow.

The actress, who is currently filming Into the Woods with Meryl Streep, flashed a big smile, keeping it comfy (and her baby bump under wraps!) in gray jeans and sneakers, a striped tee and a cozy sweater as she arrived at London’s Heathrow Airport on Saturday.

Married in 2010, Blunt, 30, and her husband, former Office star John Krasinski, 33, announced their happy news in September.

“Meeting John really changed my life,” Blunt told InStyle in April. “When I feel the support I have from him, I feel invincible. There’s someone behind you on your good days, and someone in front of you on your bad days.”

PHOTOS: Who’s Due Next?

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