Ashlee Simpson & Evan Ross Introduce Their Baby on Instagram

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Ashlee Simpson and Evan Ross attend a special preview of 'The Gleason Project' at ZEFR Warehouse on April 23, 2015 in Venice, California.

Evan Ross and Ashlee Simpson took to Instagram to share an adorable portrait with their baby girl, Jagger Snow Ross.

“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 gushed in the caption.

Ashlee Simpson & Evan Ross Welcome Baby Girl

Simpson gave birth to her first child with Ross in July; she also has a 6-year-old named Bronx from her marriage to Fall Out Boy's Pete Wentz.

Check out the photo of Jagger Snow and her proud parents below: