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In newly released photos, Prince Louis can be seen holding hands with his big sister, Prince Charlotte, at the baby boy's christening last week.

She and Prince Harry tied the knot back in May and became the Duke and Duchess of Sussex. Perfectly coordinated with her baby boy, who wore the family's replica heirloom christening gown made from Honiton lace, the delicate hue is known to signify innocence and new beginnings.

Then, of course, there's the first official portrait of the Cambridge's as a family of five - and it's attractive!

Royal photographer Matt Holyoak was picked to capture the precious moments between the family.

The first of the official photos features Louis' entire extended family, including not just Will, Kate, George and Charlotte, but Prince Harry, Meghan Markle, Prince Charles and Camilla, Duchess of Cornwall and Kate's family-Carole and Michael Middleton, James Middleton, Pippa Middleton, and her husband, James Matthews-as well.

The royal couple also named six close friends and family members to be godparents to Prince Louis.

Sadly, Prince Louis' great-grandparents Queen Elizabeth, 92, and Prince Philip, 96, did not attend.

Princess Charlotte couldn't keep her eyes off her little brother as she posed for the photo with just royal family members.

WATCH: Princess Charlotte speaks to photographers at Prince Louis' Christening.

The Duke and Duchess of Cambridge have released four official photographs to mark the christening of Prince Louis on Monday 9th July.

The gorgeous portraits, taken by Matt Holyoak in the morning room of Clarence House, show the new family-of-five with their nearest and dearest.

Unofficial photos were taken on the day of the ceremony and showed the Duke and Duchess together with all three of their children for the first time.

Prince William and Duchess Catherine introduced the world to their third child on the steps of St Mary's hospital shortly after his arrival.

We especially can't get over George cheesing at the camera here.