hair extensions...

semi-permanent: can last anywhere from 4-7 mos, can cost b/n 1000-2000+ but i think are really worth it, recommended type is great lengths (i know an awesome technician and hairstylist who has done mine twice before- pics in hair ideas album, FM me for info), best way to achieve natural, high quality, long lasting length or thickness well beyond your big day

temporary: can last the day of or for a short pd of time thereafter, cost much less than semi-permanent maybe anywhere from $30- to several hundred depending on the type, might be clip ins, glued in, braided in. these are usually less expensive and alot of stylists have experience using clip ins for wedding hairstyles, you can try asking your regular hair stylist. some stylists names come up alot here for this- ive heard denise venti, cosmony (LIW vendor)...im sure other ppl have some other names too.

i have a trial in march to try temporary/clip ins this time but ive never used them before.

HTH!