Miranda Kerr -- I Have a Girl Crush ... and She's Super HOT

If Miranda Kerr could ditch that lucky bastard Orlando Bloom for some sweet lady love ... the super hot supermodel tells TMZ ... there's only ONE WOMAN that could satisfy her craving.

Kerr hit NYC Tuesday -- in a skin tight dress -- when we asked the most important question of her career: DOES SHE HAVE A GIRL CRUSH?

Turns out ... yes, yes she does.

BONUS -- Kerr's fantasy chick HAS been in a girl-girl relationship in the past.