Hmmm...my wrists have not changed, not even a little bit, for several decades. I'm not sure how "snug" the S size fits over your right wrist. But if it's uncomfortable now, then I wouldn't. The customs route might be the best solution - I'd be interested in knowing how much of a premium VCA would charge you for this.
Incidentally, dessert1st, this is how I wear mine: Size S over tiny wrists (12.5cm in circumference). I like how it fits, loose but not too loose and certainly not tight or uncomfortable in any way.
Phoenix, You are a doll to reply and send pics! Much appreciated! Your jewelry is beautiful btw. I am such a jewelry novice and don't own many bangles... one non-hinged so it's big and a couple Clic-H so I have no idea what to want for this piece. Since this piece is so expensive I am afraid to make a mistake. My wrist is a litte larger than yours, maybe short of 14cm. On my left side it is comfortable and on the right side it is more fitted with less room to spare. Neither are uncomfortable but since this clover perlee is a much smaller fit than a Clic-H I'm being cautious. I've never had a bangle that was more fitted. Don't wear a Love bangle etc.
Thanks again for your contribution. If you ever in the mood, would be curious to have a side angle photo to show how much space your bracelet has against when worn. TIA!