July 19 (UPI) -- Hilary Duff hosted a music class for celebrity moms and their babies over the weekend.
Duff has three children -- son Luca, 9, with Mike Comrie and daughters Banks, 2, and Mae, 3 months, with her husband, Matthew Koma. Moore has a 4-month-old son, August, while Tisdale has a daughter, Jupiter, 3 months, and Trainor has a son, Riley, 5 months.
Food blogger Gabby Dalkin and makeup artist Kelsey Deenihan also attended the event with their kids.
Duff shared a photo on Instagram Stories of the six babies lying on their backs in a circle.
"All da babies," she captioned the post, tagging their moms.
Tisdale also posted a picture of the kids on Instagram Stories.
"Cutest class," she wrote. "Thanks @hilaryduff for hosting."
"Most people post this on the first day..... but you're a 3rd child Mae Mae .... soooo it's happening on the 7th... happy week earth side little bit! We love you so...."