What type of meal plan and workout male models do to get chiseled?

Ok, so we all see the pictures in windows at stores and we see it on t.v. all day long but my question is what do these guys do to get so ripped to where their abs are so defined!? and just getting there body to be so chiseled? I'm in college and I have been doing a bunch of stuff, just keeping active and have done very well and very pleased with my results so far but it amazes me how they can get so ripped and just would like to get there and be proud I could accomplish such a feat. Any links or advice would be helpful, thanks!