Upgrade Or Unrecognizable: Patrick Stump

(Credit: Scott Gries/Getty, Paul Morigi/WireImage)

When Patrick Stump showed up at the Climate Rally/Earth Day Celebration in Washington, D.C., this past weekend, we couldn't help but notice how svelte the former Fall Out Boy frontman has become over the last 12 months. In fact, we almost didn't recognize him!

Call us crazy, but we kinda liked when the pop-rocker had a lil' more meat on his bones. What about you? Has Patrick Stump's makeover given him a newfound sexiness -- or left him completely unrecognizable?

Thankfully, one thing that hasn't changed is Stump's fancy footwork. Check out his Earth Day rendition of the Bobby Womack classic "If You Think You're Lonely Now" in the video below.