Simon Cowell's Baby Mama Lauren Silverman Shows Off Growing Baby Bump in St. Tropez—See the Pic

While on vacation, the X Factor judge's expectant girlfriend flaunts her burgeoning belly

Lauren Silverman has that pregnancy glow.

Simon Cowell's girlfriend was all smiles as she casually strolled around St. Tropez on Monday. (Of course, coming across an adorable puppy on the sidewalk would have anyone grinning.)

She and the X Factor judge have been vacationing there for the last several days.

While on holiday, the two, who are expecting their first child together, have been spotted affectionately kissing as well as walking hand in hand on the beach.

A source recently told E! News that Silverman and Cowell are "100 percent together," adding, "They are definitely a couple. The relationship is loving and they're very happy together."

Earlier this month, Silverman reached a divorce settlement with her estranged husband, Andrew Silverman. They have a 7-year-old son named Adam.