I really love this idea, but I feel like you used a few 'Britney's' that weren't necessary and didn't use ones that were. Baby One More Time Britney, Oops Britney, Toxic Britney, Circus Britney and Till The World Ends Britney were definitely the best choices to represent their eras perfectly as their the most well-known and iconic. However the rest don't seem very memorable to the general public compared to other songs from her catalog of music. I'd love to see an updated version like that but with Overprotected Britney, Someday Britney, Piece of Me Britney and I Wanna Go Britney replaced with Slave Britney, Gimme More Britney, Work Bitch Britney and with Slumber Party Britney in the baby blue bra and too-too type outfit for the Glory era added at the end. I think that would be epic! Really loved this though. It gives good insight into how iconic Britney is :)