Barbie Dreamhouse Challenge

Jonathan Knight and Kristina Crestin must create Barbie's iconic bedroom suite, as they battle Alison Victoria and Ty Pennington, who are building a first-ever den for Ken. Special guests Allison Holker Boss and ET's Nischelle Turner join the fun.

Keith Bynum and Evan Thomas transform the front exterior, adding a gigantic handle on the roof, to compete with Brian and Mika Kleinschmidt's backyard pink party pad. Actress Marsai Martin joins the judges to choose one team to move on to the finale.

Christina Hall and James Bender take on Michel Smith Boyd and Anthony Elle. Then the four finalist spaces compete at a "Pink Carpet" event. One space is voted the winner, and a fan wins a stay in the DreamHouse. Appearance by Barbie star, Margot Robbie!

Find out what it took to build the first-ever real-life Barbie DreamHouse with unseen footage of each challenge, new interviews, outtakes, trivia and takeaway. Plus exclusive coverage of the winning fan's unforgettable stay in the finished Dreamhouse.