Dylan Scott tells PEOPLE of the big news, "Blair and I are blessed beyond words and ready to take on this next season of life"
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Dylan Scott will be singing “My Girl” to his newest addition!

The country singer and his pregnant wife Blair announced they are expecting a baby girl on Instagram Sunday, along with a video of the sex reveal that also starred their 16-month-old son Beckett Scott.

“Man, God has sure blessed Blair and I,” Scott captioned the footage.

“And It’s A GIRL!!!! We can’t wait to meet our little chick in September!” the mom-to-be wrote on Instagram.

Scott tells PEOPLE of the big news, “We just can’t believe it! Excited is an understatement. Blair and I are blessed beyond words and ready to take on this next season of life. Let the daddy-daughter songs begin.”

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The soon-to-be family of four also celebrated Easter with adorable photos of their son wearing bunny ears while opening his gifts in the morning.

“I believe Beckett was excited the Easter bunny came to see him!! #easter #ourlilbunny,” Blair captioned the set of photos.

The couple, who first met when they were in seventh grade and wed in July 2016, announced their baby on the way in March.

Dylan Scott and family

Scott recently told PEOPLE exclusively that the couple wanted to expand their family and give Beckett a sibling.

“Blair came to me when Beckett was less than a year old and said, ‘Why get out of the process now? Let’s just have another kid,’ ” he recalled.

“I was like, ‘Babe, are you sure you want to do this?’ But the more I thought about it, I was thinking that I’m 28 and she’s 29 and we are getting to our 30s. I think it would be really cool for Beckett to have a little sister or a little brother really close in age so they can grow up together,” Scott said, adding, “We both want big families.”

Scott will head out with Chris Young on Young’s Raised on Country Tour in May.