Zac Efron Flashes CK Waistband

Well this has been a slow week for underwear sightings, and leave it to my celebrity crush to give us one. Here we see Zac Efron cheering on the Lakers (yuk!) courtside with his younger brother Dylan, with his shirt being a tad to short (which is not a bad thing) Zac gives us a glimpse of his gray Calvin Klein underwear!

2 pictures of Zac inside!