Britney Spears Works Out in a Ton of Makeup

Spears, pictured here at a previous event with similarly heavy makeup, was seen running on the treadmill, doing crunches and generally working up a sweat.

Unfortunately for the songstress, while her intent may have been to look fierce while burning calories, her exertions caused the beauty products to smudge all over her face.

"She looked like Heath Ledger as the Joker," one witness told the "New York Post".

Perhaps some celebrities constantly go above and beyond in their daily beauty routines because they're constantly scrutinized by the paparazzi. Stars like Dita Von Teese and Gwen Stefani are rarely seen without dramatic makeup, including bright red lips, even when they're just running simple errands.

In any case most women know that the gym is one of the few places where you have carte blanche to ditch the heavy makeup.