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Dancing With The Stars

Biceps Alert: Derek Hough Shows Off His Muscles in a Cut-Off Shirt (PHOTOS)

Dancing With the Stars Season 15 All-Stars hasn't even started yet, but pro dancer Derek Hough is already looking muscular and fine.

Click through the gallery to see the DWTS star showing off his sexy arm muscles while on a shopping outing at The Grove in Hollywood yesterday (July 30).

Dancing With the Stars Season 15: All-Stars will premiere on Monday, September 24 at 8 p.m. ET/PT on ABC.

Follow Alissa Kombert on Twitter @AyeKayArt.

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