After giving birth to son Leo on Friday, Aug. 5, Jillian Harris couldn't wait to show off her baby boy on Instagram!

The former Bachelorette star wrote next to a pic of the newborn wrapped in a blanket, "World, meet little Leo… (Queue [sic] heart explosion) The last 48 hours have been the best of our lives. Thank you @slipperygoose for giving me the greatest gift of all."

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This is the first child for the brunette beauty and her boyfriend, Justin Pasutto. The proud dad also shared a snapshot of Leo smiling in his car seat.

The 36-year-old first announced her pregnancy in March with a gorgeous baby bump photo. "Words can't express how lucky and blessed we feel to introduce a new life into ours and that our wish has finally come true," Justin said at the time.

Congrats to the new parents! Scroll through the gallery below for more Bachelor and Bachelorette alums with their kids.