Do you know anyone who doesn't get hangovers?

Because I went to my sisters bachelorette party last night and was way more drunk than anyone there. I woke up feeling fine and everyone else was throwing up. Like I fell out of my chair at the bar. Not kidding. I'm a real lightweight too I weigh 110 pounds and I had 3 glasses of wine! 3 apple martinis, 3 shots and some champagne... Is that normal?