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The two finger test, in terms of bra fitting, is how one determine's if a band fits correctly. Put two fingers at the back or front of the bra.[1][2] If one can fit more, the band might be too loose; if one can't fit two, the band is too tight.[3]

Others advise doing it under the center gore in front of the bra (between your bra front and your breast bone), instead of at the back closure.[4] which will still yield the same results.

When a band is tight enough, breast weight will be carried by the body instead of the straps.[4]

With a new bra, make sure this is done on the loosest hook.

See also[]