Peta Murgatroyd Celebrates Baby Son Rio Turning 3 Months Old: 'I Thank God For You Every Day'

Peta Murgatroyd and husband Maksim Chmerkovskiy share Shai, 6, and Rio, 3 months

Peta Murgatroyd’s son is growing up fast!

On Tuesday, the Dancing with the Stars pro posted an adorable Instagram of son Rio John to celebrate him turning 3 months old.

Murgatroyd, who shares Rio with husband Maks Chmerkovskiy, captioned the heartfelt post, “Happy 3 months earthside my little Rio 🎉 You are my light, my joy, my world. Be still my heart, I thank god for you everyday….Pop is watching over you xo.”

Fellow DWTS pro Sharna Burgess commented, “Happy three months little squish!!! Sweetest boy," while pro dancer Jenna Johnson, who is married to Mak’s brother, Val Chmerkovskiy, chimed in, “Happy three months sweet love.”

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Related: Peta Murgatroyd and Maksim Chmerkovskiy Ask Son Shai to 'Please Pause' Growing Up as He Turns 6

Back in June, the couple gave PEOPLE an exclusive look at their newborn son.

“We loved Rio, which we came upon at the last minute. It’s a perfect complement to our long surname!" Murgatroyd told PEOPLE at the time. "We also wanted something easy to say with Shai."

The baby's middle name, John, is in honor of the dancing pro's late father, Derek John, who died in December 2022.

The couple first announced Rio's birth on Instagram on Father's Day. "Happy Father’s Day to me!" Chmerkovskiy wrote in his caption, before adding a cheeky remark: "#MadeInPeta."

Speaking with PEOPLE in May, Chmerkovskiy opened up about how special it is to give her 6-year-old son Shai a sibling after he and Murgatroyd dealt with fertility struggles.

"He knew the story kept being that mommy has an egg, and then the egg broke. So finally, at this point, to tell him this egg didn't break, it's a very big moment for him and for us, seeing that baby come," he said. "Now there's kicking, the stomach is moving. Watching my 6-year-old taking in that moment is also very special."

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