I've had the Oliver Peoples Strummer sunglasses for quite a while.
They were always a bit wide, and could possibly fall off my face if I was fixing my shoelaces. I went in, and asked if they could be adjusted. The sales lady brought someone out from the back to look at the glasses, and inspect how they sat on my face.
She noted that there was enough curvature in the arms, and that the best thing would be to bend the ends of the arms down to hug my ears.
She looked at them on my face a few times, and put them on my face a few more times. 4 Mins later she returned with the modifications done. They were symmetrical downward bends, and she added a bit more curvature to the arms.
They were perfect on the first shot.
I love my Oliver peoples even more.
This is at the Las Vegas Premium outlets, which is north west of the strip. Some of their glasses seem a bit cheaper, however the Strummer model was the same retail price.