Take the picture above as an example, her hair color matches Natasha's to a tee.
Himiyy does a great job with that here with the way she's positioned on the ground, gun drawn and ready to fire.
The rest of the cosplay is top-notch as well, from the belt having pouches and devices on it to the slender yet noticeable wrist cuffs.
The rest of the outfit has a more classic look to it, purely leather with her logo on the belt buckle and the emblem for S.
They are a little gaudy, but so are the ones from the comics, needing to be big enough to fire out her Widow's Bite among other things.
You can see the gravity of the situation from the looks in their eyes as well as the way their hands are clasped.