Attending the Betsey Johnson spring/summer 2011 catwalk show at New York Fashion week, the star flaunted her fabulous figure in another ladylike dress.
Having ditched her former grunge style in favour of grown-up glamour, Kelly teamed a floral body con dress with purple platform heels and finished the look with a sleek bun, simple winged eyeliner and glossy red lips.
We think Kelly looks fabulous, and it looks as though her glamorous new look is here to stay. She told Closer magazine: "Losing another 10lbs since splitting up with my ex Luke and becoming a size 6 has given me the confidence to dress up. I cannot believe all the positive comments I got."
Grunge v glamour: What do you think of Kelly's style transformation?