Let's get physical!

Pregnant Ashlee Simpson may look like her sister Jessica Simpson -- but she's definitely not following in her footsteps in regard to how she takes care of herself while she has a bun in the oven. Instead of eating buttered Pop-Tarts like her big sis did when she was preggers, Ashlee, who is just weeks away from giving birth, is staying fit and hitting the gym with her hubby Evan Ross. The former singer must have had a good workout because she is looking flushed!

Keeping herself hydrated with a bottle of Smart Water, the 30-year-old donned a Nike shirt, cropped leggings and what looks like a linen trench coat. Evan opted for a white tank and black pants for the gym trip. We aren't feeling her style so much, but we love that she's kicking it in to high gear to keep herself and her baby healthy during her second pregnancy.

The proud soon-to-be parents were married at Diana Ross' home in Greenwich, Connecticut in August. Shortly after, Ashlee found out she was expecting on Thanksgiving Day.

The blonde is due to welcome her first daughter in the summer. The former reality star has one son, Bronx Mowgli, with ex Pete Wentz.