Kelly got all excited about her “sister” Beyonce‘s bundle of joy and officially let the cat out of the bag. Check the interview beow.

Kelly told BANG Showbiz: “I’m so happy for my sister and her husband. They’re so happy in this moment right now, as they should be. They’ve made a little bundle of love, I’m so excited for them.

“I have no idea what I’m going to buy Beyonce at the baby shower because Jay is going to buy that little girl every single thing possible. She won’t be spoilt but she will be very well looked-after.

“I’ll be on hand for babysitting duties and I’m actually very good with messy diapers!”

Poor thing, seems she didnt even know she slipped up. Opps!