Skinnier suits are easy enough to come by, but a true heritage piece in pristine condition is a rare find indeed. I'd say wear it as-is ... you WILL feel silly wearing it at first (that's normal when starting with any 3-piece the first time) but that will wear off.
When you say "inherited" ... is this from a relative of yours? If so, it may have sentimental value as well ... keep it for special occasions ... and don't have it "modernised" to a thinner fit ... keep the vintage!! You will appreciate this all the more in 10 or 20 years' time!!
Be there or be square. Only I can do both!
I've got a cat named Beefeater and a dog named Beefeater, and two goldfish called Beefeater and Beefeater. There's Beefeater my hamster and Beefeater my horse, and my piglet, known as Beefeater of course.
Veteran of the Great Irisch Moos Campaign of 2008-09