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He'll be breaking hearts sure enough! Jessica Simpson couldn't help but gush over her baby boy Ace in a new photo via Twitter on Saturday, Jan. 4. 

PHOTOS: Jessica's second pregnancy

"My snuggle bug" the 33-year-old singer wrote. Alongside the caption, the former "Fashion Star" mentor shared an adorable picture of her 6-month-old son. In the black and white snapshot, Ace gazes up at the camera as he sits up in a swing outside. He also wears comfortable pants and a long-sleeve shirt for the mother-son activity.

PHOTOS: Maxwell's baby album

Simpson has been steadily bouncing back since giving birth to Ace in June 2013. When she's not spending time with fiance Eric Johnson, 34, Ace, and 19-month-old daughter Maxwell, she's busy focusing on dropping the extra baby weight. (She's also a spokesperson for Weight Watchers.) In a photo exclusive to Us Weekly last month, she showed off her slimmed-down figure and long legs in a chic rose-colored ensemble.

PHOTOS: Jessica's first pregnancy

"I am just one of those pregnant women who gains a lot of weight," Simpson previously told Us in an exclusive August 2013 interview. "I have really big boobs. I have my curves. Even trying as hard as I did with Ace, I still gained -- definitely not as much as with Maxwell, but still a significant amount."


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