The television presenter and boyfriend Clark Mallon confirmed to People that their first child will be a daughter.
Terri, 40, said she didn't mind what gender her baby was as long as the child was healthy, but added: "Deep down inside I think I've always wanted a baby girl."
The brunette – who works as a showbiz correspondent for US entertainment programme Extra - announced her pregnancy in September.
It will be a little playmate for Simon Cowell's son Eric, who was born on Valentine's Day last year.
Despite splitting years ago, the couple have remained firm friends.
No doubt Simon is already planning the perfect baby pregnant for his mum-to-be pal!
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