(WENN)

Bless her heart. Mary-Kate Olsen isn’t even of legal drinking age, but she’s already starting to look weathered, according to the staff on “Weeds.” The young actress is guest-starring on an episode of the Showtime series and to everyone’s surprise, girlfriend is looking kinda like she’s been rode hard and put down wet one time too many.

Sources on the set of Showtime’s “Weeds” tell TMZ that the newly-joined cast member is needing to spend a little extra time in the makeup chair — to cover up her dark circles and other assorted blemishes! A well-placed source tells TMZ that several crew members were overheard commenting on how surprisingly old she looks in person.

The reason suggested for her aged appearance is that she seems to subsist solely on a steady diet of coffee and Marlboro Reds. Lord have mercy, in addition to dressing like a homeless man, this girl also likes eating (or not eating) like one as well. Marlboro Reds? Seriously? That’s intense. You know it can’t be smelling good up in that mouth of hers. Sweetheart, drink some water, eat and apple and have some green-tea. Trust me, your face will thank me.

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