Hollywood underwent slim downs, haircuts and redos galore in 2013. From three famous Jennifers (Aniston, Lawrence and Hudson) going shorter to Miranda Lambert and Christina Aguilera's slimdowns, check out the best celebrity makeovers of the year!
The Oscar-winning actress debuted a shoulder-length, honey-hued hairstyle in late October -- and later underwent an even more dramatic beauty transformation by swapping in her lighter locks for a dark, chocolate-colored, blunt cut. The mom to 2-year-old Aleph (with husband Benjamin Millepied) described the transformation process as "very quick. It was like 20 minutes before we [arrived at the event]," she told Us Weekly at a NYC Thor screening in early November.