Khlo Kardashian has revealed that Scott Disick is worried about having a daughter.

The reality star's sister Kourtney is expecting her second child with Scott later this year to join their two-year-old son Mason.

And Khlo told Us Weekly that the 28-year-old is unsure how he will deal with a little girl.

"I think he's nervous to have a little girl because guys know what they were like when they were younger and they don't want their daughters to go through that," she told the publication.

"I'm sure he's going to be a little protective and I'm sure Mason will be protective too."

Scott agreed and said he "may be protective" but doesn't want to be too overbearing.

"They should write more manuals on how to raise kids because it's tough!" Scott admitted about fatherhood.

Grandmother Kris Jenner said that the couple will not be overwhelmed because with such a large family they have "a lot of babysitters."