03/18/2012 at 09:00 AM EDT
Kris Jenner has a shopping problem – and it's not sitting well with one of her daughters.
In anticipation of the newest addition to the Kardashian clan
, the matriarch of the famous family is compiling quite the wardrobe for Kourtney Kardashian
's unborn girl
"I can't stop shopping," she told PEOPLE Friday at 1 OAK Las Vegas. "Kourtney is now angry with me because I keep bringing stuff home."
Kardashian is due in July. It will be her second child with long time boyfriend Scott Disick. The couple confirmed their baby's gender in February, saying at the time, "We feel so blessed to be having a little girl and to be able to share this new experience with Mason."
"We're so excited and it's such a gift and a blessing and a new personality so for us," Jenner said while celebrating son Robert's 25th birthday in Vegas. "I'm having the best time shopping!"