The star shared a photo of her from the cover of a catalogue for The McCall Pattern Company, which specializes sewing patterns.
It's a far cry from the more glamorous modeling gigs she would go on to have, but Moynahan seems proud of the work.
"#TBT at its best! #McCallsPatterns #oldschool," the actress, 44, captioned the 90s-tastic photo.
The Blue Bloods star wed New York businessman Andrew Frankel in October and gushed about her new husband weeks after the wedding..
"He's the nicest guy ever," she said on The Rachael Ray Show in November. "Genuine, kind and sensitive. He's the best. He'll eat basically anything and tell me it's great."