"We don't have a name", she said, "and at the baby shower, I was like, 'I don't want to play any games, measuring the belly, none of that will work for this time around".
A beaming Ellen replied: 'She's a toy tester. and you just told us it's a girl'.
Kim admitted: "We don't have a name".
Appearing on USA chat show Ellen, Kim accidentally revealed that she's expecting another girl.
Kim Kardashian refused to respond
Once the cat was out of the bag, Kim continued, saying, "North is really excited about that".
"People brought toys and gifts and she was opening them all up the next day", Kim told Ellen at the 1:15 mark in the video above.
And, she says, her oldest child North couldn't be more thrilled to have a baby sister.
When Star West came up, Kim revealed that had been Norths suggestion, but the mom 'was not vibing on it'.
She explained: "It's been such a fun journey to figure out how our kids like to dress and how to make cool clothes for kids". "She named it Star West". However, they have no need to fret because 4-year-old North West has the ideal moniker.
Khloe has sent her fans wild as they try to guess if she is, or isn't, pregnant, and her eagle eyed fandom are looking to photos of the 34-year-old star for evidence either way.
Kim gave her guests party favours from her latest KKW Beauty label range, the upcoming new fragrances Crystal Gardenia, Crystal Gardenia Citrus and Crystal Gardenia Oud.
These Tories Are Furious With The Telegraph For Calling Them "Brexit Mutineers"
Another, Anna Soubry , said it was a "blatant piece of bullying" and insisted none of those named wanted to delay or thwart Brexit.