Casey Affleck, 47, and girlfriend Caylee Cowan, 24, shop at Dunkin

The 47-year-old Oscar winner and his 50-year-old brother Ben are both big fans of the fast-food chain founded in Quincy, MA circa 1950

Casey Affleck Picks Up Dunkin' Before Ben, Jennifer Lopez's Wedding

Casey Affleck, 47, and his 24-year-old girlfriend Caylee Cowan at the Venice Film Festival

Casey Affleck, 47, and girlfriend Caylee Cowan, 24, shop at Dunkin' Donuts in LA

Ben Affleck Jennifer Lopez boda: Casey Affleck, hermano del actor, rechaza ir a la fiesta, Univision Famosos

Life is a Highway' - Rascal Flatts” - Casey Affleck

Casey Affleck and Girlfriend Seen in L.A. Ahead of Brother Ben's Wedding to Jennifer Lopez in Georgia

See the best photo of celebs out and about this week, Gallery

Casey Affleck and girlfriend Caylee Cowan appear in good spirits following Thanksgiving row

Ben Affleck Jennifer Lopez boda: Casey Affleck, hermano del actor, rechaza ir a la fiesta, Univision Famosos

Parental obligations: Casey Affleck misses brother Ben Affleck and JLo's Georgia wedding

Casey Affleck and Girlfriend Seen in L.A. Ahead of Brother's Wedding