We found this pictures of her when she was a girl and the biggest difference that we see is on her nose, but these pictures are so separate from each other in time, and taken when she was so young, that it would be hard to tell if she got a rhinoplasty at some point (if she did in fact, probably at the beginning of her career) or if her nose just changed while she was growing up, gaining more definition.
Looking at pictures in different angles, lights and make up, we see that her nose changes, suggesting that she could be using the help of a make up artist to add that extra definition or projection when she thinks she needs it. In case that she in fact had a nose job, it was well done, since her nose keeps the proportions with the rest of her face and it doesn't look excessively thin.
