Jessica Simpson Shares Sweet Pic of Daughter Maxwell With Her 'Cool Cousin' Bronx

The cute kids soaked up the sun with an ice cream treat.

Nothing like Sunday Funday with the cousins!

Jessica Simpson shared a sweet snap of her daughter Maxwell enjoying the sunshine and ice cream with her cousin, Bronx, on Sunday.

WATCH: Jessica Simpsn Smooches Hubby Eric Johnson in Sweet PDA Pic!

Maxwell, 4, flashed her perfect pearly whites while digging into her sweet treat with 8-year-old Bronx, the son of Ashlee Simpson and Fall Out Boy rocker Pete Wentz.

“Cool Cousins #BX#MAXIDREW,” Jessica, 36, captioned the pic.

On Saturday, it was mommy-daughter cuteness as Ashlee, 32, shared a selfie of her and Jagger, her 1-year-old daughter with husband Evan Ross, making duck faces while out for a drive.

“??#Saturday's!” Ashlee captioned the post.

 While the big kids seemed to be loving the weekend sun, Jagger seemed more enthralled by the snow in a video posted by Ashlee last month.

NEWS: Ashlee Simpson Shares Sweet Video of Daughter Jagger ‘Loving the Snow’

The cutie was caught on camera as she adorably got a fright while touching some snowflakes.

See more on the gorgeous toddler -- like when she dressed up as a reindeer -- below.