Staying fit while growing a new member of the family in her womb, Danielle Jonas shared photos of her exercise routine on Thursday (October 24).

The wife of Kevin Jonas hit the gym, posting a series of three pics of herself working with dumbbells under the watchful eye of her trainer.

Showing off her progress in her fitness and pregnancy, the mommy-to-be tweeted, "My belly! and my muscles getting big with Anthony Michael!!! #preggoproblems."

Back in July, the eldest JoBro and his wife announced the happy news and later revealed that they are expecting a baby girl.