Pop sensation Lady Gaga has continuously defied expectations ... Cosmetic surgeons have also taken notice of her face. Or ...

Pop sensation Lady Gaga has continuously defied expectations ... Cosmetic surgeons have also taken notice of her face. Or more specifically, how its changed over the years.

The pop star also celebrated reaching No. 1 on Billboard's Hot 100 list. Lady Gaga is fresh-faced and full of gratitude. The Grammy Award-winning singer posted an Instagram video on Tuesday ...