Actress and singer Debby Ryan (born Deborah Ann Ryan on May 13, 1993 in Huntsville, Alabama) wears a 32" bra, with a cup size that looks to be a B or C, though she has not made the exact cup size public knowledge.
Her complete measurements are 32-28-32.
The 5' 5" actress got her first professional role playing Debbie on the TV series Barney & Friends in 2006. In total she has some 20 acting credits to her name with the most recent production being the TV series Jessie (2011-2012).
Appearing at the Teen Choice Awards on July 22 she dished about Jessie saying that she's been having a lot of fun in the series and that "the kids are growing up, and the fashion has gotten amazing."
Reports were that she was one of the best dressed at the show, wearing very pricey, and one-of-a-kind fashion.
She'll also be in Secret of the Wings later this year; she'll voice the character of Spike.