Ashlee Simpson could barely tuck in her baby bump in tight athletic wear after stepping out of the gym in Los Angeles, as the "Pieces of Me" singer promoted husband Evan Ross' new album called "How to Live Alone."

"Ashlee had clearly been put through the paces, and had rosy cheeks while clutching a water bottle as she made her way out of the gym," noted Daily Mail. "The Autobiography singer was make-up free and her platinum blonde locks were tied loosely to one side in a braid."

Even with her baby bump, Ashlee Simpson never failed to hit the gym, even without husband Evan Ross by her side, to make sure that she and the baby are healthy when the time comes for her to deliver.

Meanwhile, Ashlee Simpson promoted husband Evan Ross' album by posting the cover photo on her Instagram page. She captioned the image, "Everyone!Check out my HOT Hubby's new song .@RealEvanRoss'new single #HowtoLiveAlone @feat @TIP available now on @iTunesMusic!https://smarturl.it/ERHTLA."

One fan wrote, "Just downloaded it! Love it!!"

Another said, "Best song ever wrote about Ashlee, so cute."

And still fans are urging her to release new music, as one wrote, "Now, who needs to release a new music is you... I love you, don't take long time to do it ."

Another echoed, "Very good, but we need music from you! Please come back."

With her baby bump, Ashlee Simpson has never worried about losing the post-baby weight just like what she experienced when she gave birth to Bronx in November 2008.

"Carrying a child is the most inspiring, emotional, amazing experience of my life," she had said.

"My weight and my pant size are the absolute last thing I am concerned about. I am only concerned with having a healthy pregnancy and a healthy baby. People who talk and judge pregnant women's weight need to get a life!"