Huh. A tophatted, mustachioed fellow tied up by train tracks? Clearly there’s some manner of evil damsel about.

@Antonyourknee  
Actually, plate armor is usually designed to be worn over two other layers of protection- this prevents the metal from chafing against your body, as well as cushioning you against the force the metal armor is dispersing.
 
The long and short of this is that the armor leaves a bit of space around the body- Joan of Arc and Red Eva apparently didn’t have any substantial trouble fitting into the extant armor design for men, and all but the most endowed female would fit just fine in the standard model.
 
For particularly busty women, there are variants of Maximilian armor that offer domed protection on the chest, with fluting and rounding going down the torso, that should work fine.
 
As for the armor the character in this picture is wearing, it appears to be incomplete Roman banded armor, so it’s all fantasy anyway. With banded armor, all I think you’d really need to do is lengthen some of the banded layers to fit the individual’s phenotype.

@Deserter  
I’m sure they could make it flexible enough if they tried,Its probably just because not enough females fought in ancient times that a proper armor configuration was made to be efficient enough.

@Evowizard25  
The thig is that a warhammer (or any other heavy weapon, for that matter) would actually do more damage with that kind of chest plate. I mean, a full plate would soften the blow and prevent your body from moving too much, while with something like that you would just hurt yourself because the plate would stab you in the ribs every time it takes a hit and your torso bends.  
I’m over-analizing this, aren’t I?

@Antonyourknee  
Well, while her armor does leave parts of the body exposed, it does offer enough protection to last in a fight. {At least it’s more then the usual woman fantasy armor.}
 
And yeah, it does remind me of that.

That armor….(STOP RIGTH THERE CRIMINAL SCUM!YOU HAVE VIOLATED THE LAW!)…ehhh