Ashlee Simpson Ross shared a first look at her new little girl, Jagger Snow Ross, on Instagram today, and the word is out: She's pretty adorable. Little Jagger, photographed with her mom and father, Evan Ross, is 8 weeks old. It appears she's already a fashion plate in her white tulle tutu, and her parents are following her lead with coordinating white outfits. Jagger, who was born on July 30, also appears to be devouring dad's shirt cuff, but he and mom look thrilled and enthralled by her, anyway. Jagger is the couple's first child. Simpson also has a 6-year-old son, Bronx, with ex-husband Pete Wentz of the band Fall Out Boy. She told Us Weekly that Bronx has been eagerly anticipating the new arrival, saying, "I told him pretty early on. He wanted to have a sister, so he’s really excited!" Evan Ross starred in The Hunger Games: Mockingjay - Part 1 as Messalla. Ashlee co-starred with her husband's mother, Diana Ross, in the music video for his track with T.I. "How to Live Alone" at the end of 2014.