yeah i wouldn't worry about it, i know ppl who are just starting four years of uni and they're already in their early 20s, so they wont grad till like they're 26... and i know some 30-40yr olds in some of my subjects
i grad on almost the same day that i turn 21, but even then i'm not getting my hopes up for a full-time 'real' job straight after.. although i'll certainly be lookin' for one. (didn't have a gap year... regretting that somewhat). usually in your course there's an opportunity for work experience, i.e. i may be doing a professional internship for graphic design next year, and in other degree programs there are similar opportunities...
i understand your concern though, 5yrs studying seems like a lot when you want experience as well, but usually you can get it. like holiday breaks, ask around for work experience related to your area of study and see how you go. Employers generally would prefer giving uni students experience over random school-leavers who'd likely have no knowledge in the field...