One who initiates or popularizes multiple unconventional/out of the box trends good for long term for the field(s) he/she is active in.
Doing things done never before & setting new trends with effective use of creativity in an inspiring manner.
In a nation obsessed with traditional careers, Trendster Anand is only undisputed World Chess Champion in history who inspired numerous people to choose a career in sports.
A person (usually a girl around the ages of 12-19) who says they're bisexual just for the attention, making bisexuality a trend. They usually spam forums trying to cyber with someone, "I'm bi and proud of it' is usually what's in their signature.
Girls who think it's cool and edgy to be bisexual but don't date women. Or really fall in love with them. Just do it to turn thier boyfriend on or to be "experimental" or "open"
"She's a trendy Bi chick. You might be able to kiss her at a party, linda but she's not gonna go on a date with you."