The proud parents took to Instagram to share the picture of their first child. In the family picture, the adorable baby looks comfortable in her father's arms while Ashlee and Evan are gazing at their precious one, reported Ace Showbiz.
"Jagger Snow Ross !! We love her so much!!! She is beyond everything!!! I have the best baby daddy @realevanross In the world. Love you," Ashlee, 30, wrote.
Evan, 27, also posted the same pic on his own page with a similar caption, "Jagger Snow Ross ! Everyone!!!!! Everyday has been the best day!!! such a wonderful blessing. Love you @ashleesimpsonross best mommy in the world!"
She shares a son named Bronx, 6, with ex-husband Pete Wentz.