Mystery:
Try "Hi." Not 'hey, there' or 'hi, there'. A simple, "Hi", said in a matter of fact tone of voice is quite powerful if she is really beautiful. Instead of gushing or trying to be cool, you just act like she's a person.
If you stall after, "Hi", ask her, "What are you looking for?" (thanks, mystery!) Wait for her response. If she fails to say, "Ohhh, YOU, big boy!", say, "Everybody's looking for something - unless you've found it!" Be funny, relaxed and experiment with different things to say. Avoid being too damned SERIOUS!
Schema:
You - Hi... What are you looking for / Are you looking for something?
Her - No / Why / anything else
You - Everybody's looking for something - unless you've found it!
Vince about the same pickup line:
In essence, you should use the mall not only for building your skills but getting LAID. Here is where you're likely to find women in search of 'something'. Try this opener (courtesy Mystery): "What are you looking for?" She'll either tell you or give you, "Huh? What?" Now say, "Everybody's looking for something -- unless you've FOUND IT!" Since you're standing right in front of her, you can follow up with, "Are you seeing anyone special right now?" Get it? That someone could be YOU!
As many before you have found, the FOOD COURT is probably the best place to approach women. They're eating, their blood sugar is elevated, they're feeling good = shields down. Be friendly, funny, relaxed - experiment with different ways of doing this. Above all, REFUSE TO TAKE YOURSELF OR YOUR APPROACHES SERIOUSLY. Get the fuck out of your own way - this is not life or death, it's just play.