Celebrity Parents Ashlee Simpson Ross Says She Has 'All the Feels' on Daughter Jagger's First Day of Kindergarten Ashlee Simpson Ross is mom to daughter Jagger, 6, and Ziggy, 10 months, with husband Evan Ross, plus son Bronx, 12, with ex-husband Pete Wentz By Georgia Slater Georgia Slater Twitter Georgia Slater is a writer/reporter on the Parents team at PEOPLE. People Editorial Guidelines Published on August 31, 2021 05:42 PM Share Tweet Pin Email Photo: ashlee simpson/instagram. inset: getty They grow up so fast! On Tuesday, Ashlee Simpson Ross, 36, shared an adorable picture of her 6-year-old daughter Jagger Snow as she set off for her first day of kindergarten. In the sweet photo, Jagger stands in her school uniform while holding up an "all about me" sign reading her age, grade, teacher's name and the date. The chalkboard also featured some of Jagger's career aspirations, including her dreams of becoming an "artist, movie star and [to] walk on a runway." "All the feels today ❤️😭," the proud mom captioned the picture on her Instagram Story. Never miss a story — sign up for PEOPLE's free daily newsletter to stay up-to-date on the best of what PEOPLE has to offer, from juicy celebrity news to compelling human interest stories. RELATED GALLERY: Celebrity Kids Back to School Photos 2021 Ashlee is mom to daughter Jagger, 6, and son Ziggy Blu, 10 months, with husband Evan Ross, plus son Bronx Mowgli, 12, with ex-husband Pete Wentz. Last month, the singer and her husband threw Jagger an American Girl doll–themed birthday party, sharing glimpses of the celebration on social media. "Best girls party EVER. We love you @americangirlbrandofficial," Ashlee wrote on one slide of her Instagram Story. Evan Ross/Instagram In another post, the mom of three paid tribute to her only daughter, who wore a crown that read "Happy Birthday" for the occasion. "HAPPY BIRTHDAY to my little princess 🦄 You are the brightest light. We love you 🥳💚," wrote Ashlee. Ross, 32, also shared snapshots from the party, plus a group photo in which their nieces — Jessica Simpson's two daughters 2½-year-old Birdie Mae and Maxwell Drew, 9 — smiled for the camera. "HAPPY BIRTHDAY MY LOVE!" the proud dad wrote.