Adele

The English singer is very different from all other singers out there. Adele is the only woman in the history of the Billboard Hot 100 to have three simultaneous top 10 singles as a lead artist. She changed a lot since her 2008 debut album '19'.  She lost a lot of weight. 

First Picture: Chasing Pavements (19 Album), 2008

Second Picture: Hello (25 Album), 2015