Justin Bartha, Lia Smith

Justin Bartha is engaged to fitness trainer Lia Smith, Us Weekly reports.

Halle Berry and more pregnant celebs over 40

The Hangover star, who also recently tied the knot on screen on NBC's The New Normal, proposed earlier this month in Big Sur, Calif.

The couple met during a Pilates session at the Los Angeles gym where Smith works.

The Hangover Part III hits theaters next week.