Kim Kardashian has a new workout DVD series out called Fit in Your Jeans by Friday. To celebrate the release of the DVD, Kim has issued a challenge to her fans. She has teamed up with Kitson boutique to offer the challenge winner a free pair of jeans from Kitson, handpicked by Kim herself. Read more about the challenge here. Check out a preview of Kim’s new DVD below – can working out with Kim really help you fit in your skinnies by Friday? Hmm!