My favorite it-girls do not know how to dress in chilly winter

 ... all of them were nice dress in 2014 and in 2015 they were discouraging, inexpressive and badly dressed, 
otherwise see the differences between 2014 and 2015:

Giovanna Batagllia much better in 2014

Chiara Ferragni beautiful in 2014

Oliva Palermo weird in 2015

Leandra Medine strange in 2015

google images