Christmas co-ordinates: Get Katy Perry’s party style

Katy Perry caused us a major style crush when she hit the red carpet in a twinkling two-piece this weekend. Choosing the cool co-ord over a fabulous frock, Katy gave us a stylish lesson in alternative party looks. The co-ord is fast becoming the season's party hit of choice, from glittering trews and tee combos to gothic floral crop top and midi skirt duos, there's a two-piece for every occasion and figure type. Nail the trend with our top 5 picks from the high street.