Approaching working girls

[drenglish]

You see her she works at a clothing shop. She is busy with customers you want to go talk to her.
What is the best to do in a situation like this?
I just thought two possible scenarios and haven't found either one of them satisfying;
1-) there is no point to be gained by going under the pretense of a customer. She is paid to be nice to you. The worst thing is you can carry away and buy something totally useless to you
2-) it is her work place going there directly and telling her that you want to talk to her is, in my opinion, creepy at best, also infringement upon her personal space for there is no place for her to get out of the situation if she doesn't want to respond to you unlike in the street.
So I think there must be something more effective between the two. I can say the former is totally useless even if she likes you. The latter on the other hand, although it has some merits for both parties, can be a very unpleasant experience for her.
Anyway guys does anybody have a game plan for working girls?

[JackZero]

The thing that should be understood is that women that you approach while they are working have a priority on their job. If you feel that this is your only chance to approach her and that you would regret not doing so later, then you should do it. Just remember that it isn't going to be optimal for you.

My real reason for responding to this post is the label of "creepy" for approaching a girl while she's working. If you get the girl, is it really creepy at that point? Most guys that get labeled creepy are normally labeled that way because of calibration (I hate PUA lingo...but it fits here). If you are in a clothing shop and you have no intention of buying clothes, then she won't have time to just sit there and let you chat her up. You would generally have to be her type, acknowledge her constraint, be direct, and set her expectation on what's going to happen next in order to keep this thing going.

Get the creepy thing out of your mind because all it's going to do is give you a reason to not approach.

[Alex Penn]

Got it, man. Skip the customer act, you're not buying her attention. Direct approach, but smooth. Catch her during a slow moment, keep it light. Say, 'Hey, I've noticed you around, and I thought I'd say hi. Coffee after your shift?' No pressure, just confidence.