Baby girl on the way for Kanye West and Kim Kardashian

Kim Kardashian and Kanye West are shown before an NBA basketball game between the Miami Heat and the New York Knicks in this December 2012 file photo. (AP / Alan Diaz)

Kanye West and Kim Kardashian are expecting a baby girl.

The reality TV star -- who is pregnant with the couple's first child and due to give birth in early July -- is said to be "over the moon" after doctors confirmed they are having a daughter at her latest ultrasound scan.

A source close to the 32-year-old beauty told USMagazine.com: "They're over the moon! Kanye always wanted a girl."

The couple, who began dating in April 2012, announced they were expecting their first child in December.

The 'Kourtney & Kim Take Miami' star previously refused to say whether she would prefer to have a boy or a girl, insisting she only wanted the baby to be "healthy."

But she recently revealed that being pregnant hasn't had too much affect on her busy schedule or her diet.

She said: "I used to always say I can't wait to get pregnant because I will just eat whatever I want, but it's completely different. I'm like, OK, I want to eat as healthy as possible."

She also admitted: "I sleep amazing, it's like the best sleep ever. I'm a really easy sleeper though, you can put me on the couch with all these people in the room and say, 'You've got 10 minutes,' and I'll take an eight-minute nap."

Kim and her 'Mercy' rapper beau, 35, have already confirmed they will not allow their baby to appear on TV and also turned down $3 million for the first picture of the tot from a magazine.