Goin' out to a bar for the first time in a really long time

Tonight I am going to a local club with a friend. Her cousin's band is playing. I am only having one drink and the rest of the night is water. But I plan on making that drink last a long time. Here is the dilemma: I have not been out in a really long time. And even the times I did go I didn't get any attention because I was always the fat girl (237lbs). Well that's not the case anymore(152lbs). I am nervous that I am not going to know what to do if I do get any attention. Sounds dumb I know. Any words of advice?

From a bar fly, I just say relax and be you.  The freedom I find in my forties is I no longer feel the need to impress.  I don't mean bad manners or scratching myself, lol.  Just no primping and posing for the fellas.  You'll have a better time just going with your own mood.  If you meet someone there'll be no worrying if he'd like the real you should you decide to see him again.  Have fun.   

Relax be cool.... had this same type of experience... blushed and stammared alot... then called my husband to tell him how excited that made me!!!  remember to go slow on that drink... one sip alcohol, one sip water!!!  And stop after the first drink!