Rob K's weight loss is Kanye West's magic

Rob Kardashian is getting back in shape and it's all because of his brother-in-law Kanye West.

Talking about the 28-year-old reality star's 15 pounds weight loss, a source said that it's Kanye working his magic as the rapper has been a great motivator for him, reports Us Magazine.

The source added that the 38-year-old rapper told the 'Keeping Up With the Kardashians' star how he got into shape after his accident and at a time when he was down in his life.