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Melissa Rycroft, Instagram

Instagram

How precious is this picture?!

Melissa Rycroft introduced her newborn baby boy Beckett Thomas to the world in a sweet snapshot of the tiny bundle of joy wrapped up in a baby blanket while being held by his big sis Ava Grace with a little help from daddy Tye Strickland.

"The start of a new, lifelong relationship," the brunette beauty captioned the photo.

The 3-year-old cutie, with her bright pink shirt and big yellow bow, couldn't help but smile from ear to ear while looking at her new baby brother.

The Dancing With the Star: All-Stars winner gave birth to Beckett in Dallas, Texas, on Sunday. The newborn weighed 7 lbs., 7 oz., and measured 19.2 inches.

"This little guy has been teasing us about his arrival for the last month so it is only fitting that he surprise us with his arrival on Easter Sunday. He's perfect and beautiful," Rycroft tells E! News.

"Ava can't wait for us to bring him home to be able to show us all of the big sister duties she's been practicing."

She already looks like a pro.