The Destiny's Child singer is expecting her first child with husband Tim Witherspoon and speaking to US entertainment site Fox411, Kelly let slip she is going to have a baby boy!
Talking about her new arrival, Kelly referred to her baby as a "him" and on realising her mistake the 33-year-old said: "Can you please tell [my husband] that I spilled the beans?"
The mum-to-be let on a bit too much information when she was talking about the many gifts her tot had received ahead of his arrival.
She said: "So far, everything has been good. I just feel like the baby is already rotten–like literally, my Caress family has gotten him all of his little bathing stuff, his toys–it's just so cool."
Realising she had then given the game away about her baby's sex, Kelly then said: "Aw, f*** it! It's a boy. It's a boy!".
Apologising to her little man, Kelly laughed as she said "I'm sorry, baby" while stroking her bump.
The star then asked her rep to contact her husband to let him know their secret was out - oops!
In a recent chat with E! news, Kelly said she and Tim couldn't be happier as they prepare to welcome their first child together.
Excited for the birth of her son, Kelly said she was blessed to have such a "hands on" husband, labelling him an "amazing man".
Back in May, Kelly married Tim in a secret Costa Rican wedding and a month later the couple were headed for baby bliss as Kelly confirmed her pregnancy with a photo of a pair of baby-sized trainers.
Posting a snap of a pair of adult sized trainers lined up next to a matching baby pair, Kelly wrote: "I'll be stuntin like my daddy…"
And with Kelly having just confirmed she is having a baby boy, it seems Tim's mini-me really will be.
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