Former "The Biggest Loser" host Caroline Rhea has given birth to a girl. The actress and her longtime boyfriend, Costaki Economopoulos, welcome their first child on Monday.

Named Ava Rhea Economopoulos, the couple's daughter weighs 8 lb., 15 oz., and measures 22 ˝, as per People magazine.

Rhea, 44, explained Ava's name, "We wanted the shortest first name possible, since her last name is the alphabet."

Her pregnancy was first announced in May.

The actress recently revealed that her former co-star Melissa Joan Hart, 32, couldn't wait to boss her around on her first child.

Rhea told OK! magazine, "She's so bossy!"

"She literally said, 'I can't wait to boss you about this baby.'"

Hart is already a mother of two.

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