Deeley hit the stage for the Top 10 dance off in an "an angelic cocophony of feathers and diamanté on a classic cream shift dress" by Valentino. What the audience didn't see was the behind the scenes near-fashion catastrophe. "I threw the dress in my bag this morning and when I got to the studio and took it out of my bag there was a big mark on the front," said the host. "Luckily a wardrobe assistant was able to get it out. Can you believe I almost ruined a Valentino?" Deeley paired the rescued dress with silver Miu Miu pumps and natural hair and makeup to give her look a "'60s vibe."