What is SASE and LOR and all the other abbr. mean?

ok thnx. i'll post it up if i get it back!

well today i sent Robert pattinson's letter and i used this address: c/o Endeavor Agency Stephanie Ritz 9601 Wilshire Blvd. Floor 3 Beverly Hills, CA 90210 and i see ppl using this one: Curtis Brown Group Ltd. Haymarket House 5th Floor 28-29 Hatmarket London SW1Y 4SP UK did i use the right one?? :cry: