Singer Fergie flashes her butt in see-through lace shorts [PICS]

The 40 year old mother of one flashed her derriere in a very short lace onesie as she attended the second day of Coachella Music Festival in Indio, California on Saturday. What she's wearing doesn't look scandalous until you zoom in. Check on it after the cut...

She hung out with Kendall Jenner and Hailey Baldwin...

Source: LIB