Jessica Simpson cuddles with son Ace, 6 months. Credit: Courtesy of Jessica Simpson

Someone's a proud mama! Jessica Simpson may be new to Instagram, but the family-driven fashion designer has clearly become immersed in the photo-based site, posting countless images of her daughter Maxwell Drew, son Ace Knute, and fiance Eric Johnson. 

On Jan. 26., Simpson, 33, posted seven new images of her children and future husband on the site, each more precious than the next. 

In one shot she posed with daughter Maxwell, 20 months, who was wearing a diaper and a pair of Simpson's boots. 

"Raiding mom's closet. I don't blame her! She is too young to steal ;)," the fashionista captioned the photo.

The Weight Watchers spokeswoman also cozied up to 6-month-old son Ace to give him a kiss on the cheek and captioned the picture, "Ace is the place that I become the annoying kissing mom. All I want to do is snuggle this lil emotional perfect soul! He is a dream!"

PHOTOS: Jessica in jeans!

Simpson also happily posted plenty of shots with her fiance Eric Johnson. The former recording artist recently revealed that they're hoping to get married this year. 

One cute pic features Johnson, 34, cradling both of his children wrapped in towels, which Simpson captioned, "Bath time buds." 

She also shared a picture cozying up to the former NFL player looking fresh-faced and happy, with the caption, "Date Day! Thank God he likes me in a ponytail… Duh ;)."