Ashlee Simpson and husband Evan Ross proudly introduced their little bundle of joy to the world, via Instagram, with the most precious photo, reported Us Weekly.

"Jagger Snow Ross !! We love her so much!!! She is beyond everything!!! I have the best baby daddy @realevanross In the world. Love you," Simpson, 30, wrote in the caption on Instagram.

The shot shows Ross holding the baby while Simpson cuddled in close, both parents looking down lovingly at their baby girl. Little Jagger Snow is not staring directly at the camera, but her gorgeous blue eyes still pop. Her little hand is raised as if she's waving "Hi." Everyone is wearing white in the picture, including Jagger Snow in a tutu ensemble. 

"Jagger Snow Ross ! Everyone!!!!! Everyday has been the best day!!! such a wonderful blessing," Ross wrote in his caption of the same photo, posted to his Instagram page. "Love you @ashleesimpsonross best mommy in the world!"

The couple welcomed Jagger Snow July 30, and announced her name in social media posts Aug. 2, as previously reported by HNGN. Simpson began dating Ross, the son of iconic singer Diana Ross, in 2013, and the couple wed in August 2014 during a ceremony at Diana's Greenwich, Conn., estate.

Jagger Snow is Ross' first child and Simpson's second, as she shares 6-year-old son Bronx with her ex-husband, Fall Out Boy rocker Pete Wentz. Even though Ross is a first-time dad, family sources said he did a great job supporting Simpson while she was giving birth to their daughter.

"Evan was very emotional and loves Ashlee so much," an insider told E! News. "He did not leave her side and wanted to go through this with her every step of the way."

See Simpson's Instagram post along with the photo of baby Jagger Snow below.