Carrie Underwood had a very special date for her 32nd birthday -- her baby son! Credit: Michael Loccisano/WireImage

Best birthday ever! Carrie Underwood celebrated the big 3-2 at the hippest after-hours spot in town — her son's nursery! The "Little Toy Guns" singer turned another year older on Tuesday, March 10, and spent the first few hours of her special day doting on her newborn baby boy. 

As previously reported, the American Idol alum and husband Mike Fisher welcomed their little bundle of joy on Friday, Feb. 27. They announced the news a few days later via social media, sharing a photo of their son's cute little fingers via Twitter and Instagram.

"Tiny hands and tiny feet...God has blessed us with an amazing gift! Isaiah Michael Fisher - born on February 27," she captioned the shot. "Welcome to the world, sweet angel!"

Isaiah is the couple's first child together. Married since July 2010, they revealed the news of Underwood's pregnancy in September, with a photo of their two dogs in "big sister" and "big brother" T-shirts.