It's all about proportions, accessories, sparkles.....and fab red hair :)
Love her little pearl and flower necklace (Chanel?). It reminds me of this one from Gabriele Frantzen at MyTheresa or this incredible Fenton and Fallon piece for J. Crew. In fact why is J. Crew not available in London? Everytime I go into one of their shops in New York I find something I must have....fingers crossed they will open a store here soon.
And her handbag? Love the flair!