Ryan Lochte and Kayla Rae Reid welcome baby boy

Photos: Growing celebrity families

Married reality stars Heidi Montag and Spencer Pratt announced in April that they are expecting their first child in October 2017.

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Photos: Growing celebrity families

Brittany Bell and Nick Cannon welcomed son Golden "Sagon" Cannon om February 21. Cannon announced the birth on his Instagram account.

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Photos: Growing celebrity families

George and Amal Clooney are expecting twins. Matt Damon, the actor's friend and co-star in the "Ocean's" series, confirmed the news. These are the first children for the couple, who married in 2014.

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Photos: Growing celebrity families

Rapper Jay Z and singer Beyoncé, seen here with daughter Blue Ivy Carter in 2014, are adding to their family. The singer announced on Instagram she is pregnant with twins.

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Photos: Growing celebrity families

"Wonder Woman" star Gal Gadot and husband Yaron Versano announced via Instagram in November that they are pregnant with their second child.

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Photos: Growing celebrity families

Tori Spelling and husband Dean McDermott announced in October that they are expecting baby No. 5. Son Beau Dean was born in April and joined the couple's other children: Liam, 9, Stella, 8, Hattie, 5, and Finn, 4.

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Photos: Growing celebrity families

Singer Kelly Clarkson gave birth to son Remington Alexander Blackstock in April 2016..

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Photos: Growing celebrity families

Olympic gold medalist Ryan Lochte and his fiancée Kayla Rae Reid welcomed their first child, a son, in June

Ryan Lochte and his fiancé Kayla Rae Reid welcomed a baby boy on Thursday, according to the Olympian's rep.

Caiden Zane Lochte is the first child for both Lochte and Reid, who announced their engagement in October.

Related: Ryan Lochte is engaged

Lochte definitely seemed up for the challenge of fatherhood when he spoke to USA Today in January.

"I'm prepared for a lot of stinky diapers," he said. "I have nieces and nephews, so I know what it's going to be like. I'm actually kind of thrilled to be able to change diapers and do all that and go through this process with Kayla, and our whole new family. I'm definitely really excited. I can't wait."