Famous athletes, actresses, and other notables flocked to the 2013 ESPY Awards in Los Angeles on Wednesday night. "Mad Men" star Jon Hamm hosted the event.

Winners included LeBron James, who won three ESPYs; Serena Williams, who won two (including female athlete of the year); and Michael Phelps.

LeBron presented "Good Morning America" host Robin Roberts with the Arthur Ashe Courage Award. Over the past few years she battled severe health problems - breast cancer and myelodysplastic syndrome (MDS), which required a bone marrow transplant.

As for fashion, many of the ladies opted for mini dresses.

Selena Gomez (above) looked sexy in a red lace dress with black heels and matching crimson lipstick. Her on-again, off-again boyfriend Justin Bieber wasn't by her side - but maybe that's because he's currently on tour.

Strapless, low-cut gowns were also prominent on the red carpet.

Check out more photos from the event...