Reality TV queen, Kim Kardashian has accidentally confirmed the gender of her third baby.

During an appearance on the Ellen DeGeneres Show, Kim was quizzed about the lavish baby shower she held over the weekend.

The 37-year-old reality star, who is expecting her third child via surrogate in January, held the bash at her sprawling Los Angeles home.

Pictures shared on social media showed the house and garden decked out with pretty pink cherry blossom.

Now the reason for the pink overload has been revealed , Kim is expecting a baby girl!

Speaking to Ellen about the star-studded party, Kim said: “People brought toys and gifts and she was opening them all up the next day and she (North) said, ‘Mom, since baby sister’s not here, I think I need all of her toys in my room and I’ll play with them and just make sure they’re all okay for baby sister.”

“You just told us it’s a girl!” interrupted host Ellen.

Laughing at her blunder, Kim admitted she had indeed let slip she’s expecting a little sister for North, four, and one-year-old Saint.