Chris Jackson - WPA Pool/Getty Images
Rita Kokshanian
May 02, 2015 @ 7:00 am

Prince George is officially an older brother! Kate Middleton and Prince William welcomed their second child early Saturday morning, a girl, Kensington Palace announced on Twitter. The royal baby was born in the Lindo Wing of St. Mary's Hospital in Paddington, London—the same place the happy couple welcomed Prince George two years ago. The baby, whose name was not yet announced, weighs 8 lbs, 3 oz., the Palace also tweeted.

PHOTOS: Kate Middleton and Prince Williams's Cutest Couple Moments

Clarence House made the official announcement in September that the Duke and Duchess of Cambridge were expecting their second child and confirmed in October that the baby was due in April. Since then, Middleton stepped out in a seemingly non-stop parade of stunning maternity ensembles, from an ice blue Jenny Packham gown at the Wildlife Photographer of the Year Awards in London to a hot pink Mulberry coat for her last official appearance before giving birth. Take a look back at all of the Duchess's most memorable maternity outfits in our gallery now.

PHOTOS: Kate Middleton's Most Memorable Maternity Ensembles

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