Katy Perry arrives at radio one on Sept. 2, 2010, in London alongside FredFlare's polka-dot Katy dress, a fabric brooch from Avalaya and a belt by J. Crew.
We love it when a fashionista takes a garment and makes it her own. Which is exactly what Katy Perry did with this navy polka-dot frock, originally made by Wheels & Dollbaby. The side slit, belt, and flower pin were not included in the original look, but we think those details are exactly what make the outfit stand out on the gorgeous singer. If you want to steal Katy's DIY style, start with the polka-dot Katy dress ($64, FredFlare.com). Add a colorful touch like this Large Red Fabric Rose Brooch ($17.11, Avalaya.com). Then, cinch your waistline like Katy did, with something like this pin-slim patent belt in alabaster ($29.50, JCrew.com). And of course, don't be afraid to pull out a pair of scissors to tailor the look to your own liking (a slit to there...hello!).