Ladies or Gentlemen's, At what age should a man begin to wear preppy clothes that are sophisticated?

A backround on myself is that i'am 18 years old a freshman in college. I like to dress in designer clothes like true religions, sevens, polo, and other edgy couture clothes. I recently was thinking of buying a very conservative sleek outfit from polo, but was told i would look like a old golfer. I want... show more A backround on myself is that i'am 18 years old a freshman in college. I like to dress in designer clothes like true religions, sevens, polo, and other edgy couture clothes.
I recently was thinking of buying a very conservative sleek outfit from polo, but was told i would look like a old golfer.
I want people's opinions on this, what age do you see someone wearing stuff like this..(copy nd paste link)

http://www2.pictures.zimbio.com/pc/Scott+Disick+Kourtney+Kardashian+Scott+Disick+0LQMtQTDoZRl.jpg?44555PCN_Kourtney01

or

http://www1.pictures.zimbio.com/fp/Scott+Disick+Kourtney+Kardashian+Family+Arriving+51Q_qJKIaJyl.jpg

I'am 18, thats why im wondering if i should wear this or put it aside till i get older like late 20's.
5 answers 5