happy Birthday! What kind of clothes do you normally wear? There are so many different Louis Vuitton bag to choose from, you really have to find a bag that fits your style. If you are really lady-like, I recommend everyting in the epi or vernis line, very feminine. If you are sporty, try the mini monogram and the original monogram, damier is not bad either. What's your budget?
I wear the mini monogram Josephine pm (cherry color) when I go to school, and I wear my vernis Houston or Vernis 圓筒包 (Bedford) when I go shopping. For clubbing, I wear smaller bags such as the epi pochette. That's about all I can tell you. Hopefully it helped. :)