‘Dancing With the Stars’ pro Lindsay Arnold, husband Samuel Lightner Cusick welcome baby girl

The “Dancing With the Stars” family just got bigger.

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According to People magazine, dance pro Lindsay Arnold, who has appeared on the show since 2013, and husband Samuel Lightner Cusick officially became parents Monday with the birth of their daughter.

“The most beautiful surprise on this very special day,” Arnold, 26, captioned an Instagram photo of the family of three. “Baby girl and mama are healthy and well. More details to come, but wanted to share this first pic of our little family.”

People reported that the baby, the couple’s first, was born via C-section one week before her due date. Arnold and Cusick have not yet publicly revealed the child’s name.

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