Top definition
A young, attractive woman typically spotted in a metropolitan area, wearing high end fashion with a smoking hot body.

While no proof is actually needed that she has a trustfund, her tight body, air of privilege and entitlement coupled with her expensive threads makes her trustbuns.
Guy1: Yo, check out that piece of ass in those Juicy Couture spandex. That chick's proof that yoga works.

Guy2: True dat. That's some trustbuns, son.

Guy1: I love Madison Avenue in the morning.
by Officer I.P.G. September 09, 2010
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