请教xiaobaitu, pjiang, 各路高手.....

J-1 to F-1 to H1-b. I got married with a Citizen in Dec. 07 so I can apply Green Card. Our wedding date is May 08. When I invite my parent to US to attend my wedding, will there be question from VO that "why another wedding since your daughter already got married"??? If I am already married as of 07, how to apply my parents to attend wedding in 08??? HELP??
Another question, invitation should be coming from me or my hu*****and??? I also wanted to invite my grandma and my auntie. Should they go get Visa with my parents in BeiJing? Thanks Thanks anyone.