Austin Mahone: Shirtless Segway Rider on 18th Birthday!

Austin Mahone goes shirtless and shows off his hot bod while riding his Segway around Miami, Fla. on Friday afternoon (April 4).

The singer was celebrating his 18th birthday that day and he certainly looks to be having a blast on his first day as an adult!

PHOTOS: Check out the latest pics of Austin Mahone

Austin gave a gift to his fans earlier in the day by announcing the release date for his upcoming debut album, in addition to his plans for a headlining tour this summer.

Not only is Austin in Miami to celebrate his birthday, he also has been spotted spending time with Justin Bieber to record some new music together!