Bump Alert: Guy Ritchie's Girlfriend Pregnant With Baby No. 2!

Mum seemed to be the word at the Dark Knight Rises' London premiere; couple welcomed a son last September

Mum certainly seemed to be the word for Guy Ritchie and Jacqui Ainsley at The Dark Knight Rises' London premiere.

Thanks to the body-hugging LBD Ainsley wore on the red carpet, media on both sides of the pond are pretty convinced that she and Ritchie are pregnant.

While the couple didn't discuss it with the press, the filmmaker's rep did, telling E! News: "I can confirm the report is true that they are expecting their second child."

Yes, that certainly seems like the glow of impending motherhood on Ainsley's face!

Not to mention, the model happily rested a hand on the curvature of her belly for the cameras.

The 30-year-old model and Ritchie, 43, welcomed son Rafael on Sept. 5 in London.

This will be Ainsley's second and Ritchie's fourth. The Sherlock Holmes director is also dad to biological son Rocco and adopted son David, both with ex-wife Madonna.

He and Ainsley have been together since April 2010.