Sir Ian McKellen turns 75 today, celebrating another year not only as one of our greatest thespians, but also as perhaps the most dapper dresser in the acting game. 

Whether Hollywood-ing it up on the red carpet or kicking back with his best bud and X-Men co-star Patrick Stewart, McKellen brings imagination, style and, above all, a sense of fun to his wardrobe. In tribute to the great man, we present Sir Ian's guide to growing old stylishly and with a big ol' glint in your eye.