Do you mean reverse image search? Tin Eye is free for non-commercial use, and Google Image Search has this capability as well. For commercial use, you're probably not going to find a free option.
The Asian bait/switch providers haven't quite pulled this off yet. I'm sure a number of others haven't either, but it's quite useful for certain categories...
Asian shops are notoriously bad not just for having a totally different woman in person, but also when it is the same woman as the pic, she's either like 8 yrs older or more thanks to heavy photo post processing.