Rose and Khalifa did not plan the reported pregnancy but are supposedly delighted that a little one on the way.
News has also emerged that the engaged couple may walk down the aisle sooner than they originally intended to.
A source told Radar Online: ‘Amber and Wiz unexpectedly got pregnant, but they’re really happy to be starting a family together.’
And a baby on the way means the 28-year-old will be making some serious alterations to her lifestyle, including quitting smoking and accepting that her figure is going to change.
According to the Daily Mail, an insider claimed: “Amber’s already had to make some big lifestyle changes, like not smoking cigarettes anymore. As a model she’s used to having a thin waist, so this is going to be an adjustment for her.”
The two were planning a winter wedding, but MediaTakeout reports that they are now hoping to bump the big day up to October.
The website claims that Amber is expected to give birth to the baby in January and doesn’t want to have the wedding too close to her due date.
It will be the first child for both.