PopCrush Puzzle: How Fast Can You Solve This?

Hint: This pretty pop starlet from the U.K. got her start on reality TV alongside fellows youngsters One Direction, but now she's all grown up -- her first two singles have been dominating radio, and her debut LP in the U.S. impacted within the Top 10 on the Billboard 200 albums chart... and did we mention she's getting ready to walk down the aisle with her husband-to-be? Slide the puzzle pieces into the empty blue squares to get this gal's cover art back in place!