Demi Lovato channels her summer style as she leaves the BCBG Max Azria boutique in Beverly Hills, Calif., on Monday afternoon (October 17).

The 19-year-old musician was getting fitted for her bridesmaid dress for gal pal Tiffany Thornton‘s wedding.

PHOTOS: Check out the latest pics of Demi Lovato

Tiffany told J-14 mag about picking the designer, “I love the way the dresses fit. I wear the brand on the red carpet all the time, so it was really no question for me when it came time to choose where to get my dresses. I’m really fortunate that they said yes to helping me out.”

She added, “I have eight bridesmaids!”