Well ive been thinking and at 12mm to 1/2inch is that a big jump or could i easily just stretch to a 12mm and pop a 1/2inch plug in without using a taper. It'd be a big help if sumone who alrdy had done this culd tell me.

 are you already at 12mm? even if you are, i wouldn't suggest it. try taping.

How long have you been at 12mm?  If you've been there for a few months, I'd take a hot shower, lube yourself up and try slipping a 1/2" plug in there.  If it is painful - stop.  And then try taping or tapering or whatever blows your hair back.

 Good luck!

EDIT: http://forums.bodyartforms.com/forums/p/22655/262276.aspx#262276 - this was only a couple days ago!!!!!!!!!!!  You have not been at 12mm long enough.  Please do not do this!

 http://forums.bodyartforms.com/forums/p/22574/261365.aspx#261365

this person clearly doesn't want to wait. 

that would be like me saying I could go from 11/16" to 3/4" in one day. the answer is no. you should wait and let your lobes heal from the micro tears created from stretching

 im not alrdy at a 12mm i am just wondering so i can buy the jewelry ahead of time

Of course you can buy the jewelry ahead of time.  Many people buy jewelry for future stretching and for their goal size.

 I kno i can I was just commenting on what she said about me being at a 12mm alrdy

 Don't stretch to 12mm then just stretch to 13mm right away.