new pants (costume) for the man

someone is turning 15 next month on halloween. that’s right, 105 doggie years old.
in honor of his 15th bday, and his love for dressing up, i think clancy-pants deserves a new costume.
kind of like a sweet 16 dress but for a dog, a boy dog.
money isn’t an issue here people, when was the last time your dog turned 15??
……any suggestions?