Ariel Winter I Got this 'Adult Thing' Covered

0124-ariel-winter-coffee-looking-good-AKMGSI-01It's been nearly a year since Ariel Winter was emancipated from her mother ... and it looks like she's doing just fine on her own.

The 17-year-old 'Modern Family' star was snapped in Bev Hills leaving a Starbucks.

She turns 18 in just four days ... but it's clear she's already got the whole "adult thing" down pat.