Don't lie. You've always wanted to streak across Washington, D.C.

Well, now's you chance to do it -- legally -- and for a good cause.

Cupid's Undie Run, the Nation's Capital's first-ever underwear run, which benefits the Children's Tumor Foundation, is set to take place Valentine Day's weekend 2011.

The 1.1-mile event that entails 600 "cupids," circling the U.S. Capitol Building, will feature pre- and post-run celebrations at the Pour House Bar & Restaurant.

For more information or to register or donate online, please visit www.cupidsundierun.com.