I hate to throw a wet rag on the thread here, but I do not recommend carrying your gun in a purse for the following reasons:
1.) Statistically you stand a much greater chance of getting your purse snatched than getting mugged, raped, etc.
2.) You probably don't always carry your purse with you.
3.) The draw stroke tends to be somewhat slow.
Also, bad guys have been known to use your purse straps to fling you down to the ground before they abscond with the purse.
I believe that that the best bet is too find a carry method on your body that you can feel comfortable with and stick with it.