Prince William, Kate Middleton, and Prince George became a family of four on Saturday, May 2, when Kate gave birth to her second child [1], a daughter they named Charlotte. The little one was born within hours of the palace's announcement that Kate had gone into labor [2]. It was only hours later that the fourth in line to the throne made her public debut [3] outside the Lindo Wing at St. Mary's Hospital in London. But that wasn't the only exciting moment; Prince George even made an appearance [4] to visit his new sister at the hospital. Keep scrolling to see the absolute sweetest moments from the big royal day, and then relive the excitement in GIFs [5] as we celebrate Charlotte's one month birthday!

When William First Emerged From the Hospital With a Proud Grin

When He Couldn't Contain His Smile While Going to Pick Up Prince George

When William Tried to Let George Walk

When George Preferred to Be Carried (Better to Show Off Their Matching Outfits!)

When William and George Waved Together

When William Gave George a Sweet Kiss

When We First Saw the Family Emerge From the Hospital

When William and Kate Sweetly Looked at Their Daughter

When William and Kate Shared a Loving Glance

When William and Kate Looked at Helicopters Overhead With Excitement

When the Trio Posed For This Picture-Perfect Moment

When William Helped Kate Down the Stairs

When We Saw the Baby Girl's Sweet Face

When Kate Was All Smiles Leaving the Hospital With Her Husband and New Baby