Workout model Jen Selter might be continuing to gain extra muscles in her bottom torso based on a new picture she posted, exposing how hard she works at the gym.

Jen Selter Reveals What She Goes 'To Bed' With

The picture that was added to Selter's Instagram page on Friday shows the model from the waist down. She's outside wearing black shorts with light blue sneakers. While a small part of her back can be seen, her behind stands out along with her thighs. As the rest of her legs are shown, she shows off massive muscles in her calves.

She captioned this image as, "@squatspo." Odds are likely, squats are one of her biggest workouts along with leg lifts if she's able to make them as curvy as they are.

Jen Selter Wears Racy Bikini For Summer

Selter is typically known for posting racy photos of herself while also showing her hard exercise work.

Before this picture was posted, the model put one up where she's doing a bridge pose on a boat at sunset. She's wearing bright-colored pants as her famous backside is exposed once again.

Another photo of Selter shows her in a black bikini with her back curves shown along with her abs and cleavage.

The model recently wrote a column for New York Post on how she's trying to get her mother to have a backside like her daughter's.

"I'm going to take a before photo, which I wish I did more of with my whole fitness makeover," Selter wrote. "It's going to be fun to see it plump up and show the results to everyone on Instagram."

Tags: Jen Selter