The Challenge alum Ashley Kelsey is a new mom.

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The 34-year-old television personality welcomed her first child, daughter Snoh Marie, with her boyfriend, professional football player Kerryon Johnson, 23, on Tuesday.

Kelsey shared the news in an Instagram post Wednesday.

"She's here!! Everyone meet, Snoh Marie Johnson," Kelsey wrote. "Born June 8th at 9:09, 8 pounds 13 ounces, and 23 inches long!"

"To my little best friend who stole my heart from the moment I found out I was pregnant. I can't believe you are finally here, I just sit and stare at you because I never could have imagined you'd be this perfect," she said.

Kelsey said pregnancy was "the most rewarding journey" and ended in "the most rewarding way."

"I'm so grateful and feel so beyond blessed to have you in my life. I can't wait to watch you grow," she wrote. "@kj_hey your daddy has been so supportive and my rock during this entire pregnancy and I couldn't have asked for a better man to take this journey on with! I love you both!"

Fellow Challenge alums Jenna Compono and Mark Long were among those to congratulate Kelsey in the comments.

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"YAYY!! So happy for you! Beautiful baby girl and beautiful name!" Compono wrote.

"OMG congratulations you guys!!!!" Long said.

Kelsey confirmed the birth to People.

"Kerryon came up with her name and I just loved it. We wanted something unique and beautiful, and it fits her perfectly," she said of Snoh. "Becoming a mom is so surreal. You see her tiny face and just melt. I've just been staring at her since the minute I gave birth. I'm so in love."

Kelsey and Johnson announced in December that they were expecting their first child.

"Our biggest blessing yet! Just call us Mom and Dad. We can't wait to meet you little girl," Kelsey wrote on Instagram.

Kelsey came to fame on The Real World: San Diego before starring in several seasons of The Challenge. She last appeared in The Challenge: Invasion of the Champions.