YouTube users tend to choose an attractive miniature when they upload their videos so that more people will watch them. VEVO doesn't seem to make their best miniatures sometimes. Here are some examples...
A.R. Rahman & the Pussycat Dolls f/Nicole Scherzinger - "Jai Ho! (You Are My Destiny)"
The Pussycat Dolls - "Hush Hush; Hush Hush"
Selena Gomez and the Scene - "Love You Like a Love Song"