"Kim having another baby this year is heavily influencing her other sisters."
The Kardashian-Jenners are a clan that seem to be growing all the time.
The reality TV star sisters are famously family-orientated and 2018 saw three of them having babies.
Kim welcomed her third child, daughter Chicago, in January, youngest sister Kylie gave birth to baby Stormi last February and Khloe had daughter True in April.
The babies have been nicknamed the 'triplets', having been born so close together.
Now it looks as though there could be more multiples in the family this year.
It was reported yesterday that Kim and hubby Kanye West are
due their fourth child via a surrogate in May.
A source has told
E! that the news has had an effect on Kim's sisters.
Khloe and Kylie are said to be keen to expand their broods so their children can grow up alongside their cousins.
"Kim having another baby this year is heavily influencing her other sisters and their baby plans," the insider said.
"They all loved being pregnant at the same time and everyone wants all of the kids to be close in age.
"Everyone jokes about having another round of 'triplets' all the time."
Kim previously said that having children around the same time has made her family "more connected".
"All the kids want to hang out," she told E!
"It's just a whole different experience now. It's so much fun."
