Jenna Dewan is sharing a glimpse into the challenges ... struggled to button her pants before turning to the side and showing off her baby bump. She also called it "a workout" to put on all ...

The expectant mother hilariously showed behind-the-scenes footage of how she gets dressed to film 'The Rookie' Jenna ... inside her pants, proclaiming, "Okay, this is a workout." Dewan said ...