The first-time mom-to-be was all smiles during an outdoor workout with her yoga instructor on Thursday. If she didn't have a baby bump, we wouldn't even know she was expecting. Just check out those toned arms.
If that were us, we'd be a frowning, frumpy mess. But Jennifer looks like she's enjoying every minute of her workout, and her pregnancy!
The 34-year-old and her beau, Brian Hallisay, announced they were engaged and expecting back in June.
By the looks of things, JLove will have no problem getting back to her "Client List" body after giving birth. Click on the "Launch Gallery" link above to see her get her fitness on! Plus, find out which other Hollywood stars are expecting below: