Quote by Dancing_Doll
If you want the good stuff, go for Agent Provocateur.
Agent Provocateur
http://www.agentprovocateur.com
Garters and Hose
http://www.agentprovocateur.com/us-main-nav/lingerie/suspenders.html
La Perla also makes gorgeous high-end lingerie.
http://www.laperla.com/en-us/
Or if you want a mid-range price-point, check Victoria's Secret.
http://www.victoriassecret.com/sleepwear/garters