Princess Diana's niece, 33, was breathtaking in a rosy pink ball gown ... revenge' dress: a corseted strapless midi dress paired with buckle-adorned heels. Also in attendance, were Kitty's twin ...

The niece of the late Diana, Princess of Wales rocked a jaw-dropping ball gown and it's just too pretty ... choker a diamond stud earrings. Kitty's dress is a frothy delight and we are obsessed ...

In honor of Sanrio’s 50th anniversary, it’s best-known character – Hello Kitty – is playing dress-up by donning the outfits of some of her fellow stars.