No, dear.

No, dear, you may not uninvite someone to your wedding for any of the following reasons:

• The person in question has a history of being severely underdressed at nice functions or just plain wears ugly clothes. (It will reflect poorly on them, not you.)
• The person in question (a friend of your fiancee) advised your fiancee to break up with you when you first started dating and you just found out. (Obviously your fiancee didn't listen and it's water under the bridge for them, you need to move past it.)
• You have had too many people RSVP and now they all can't fit. (You should have taken this into consideration.)
• They accidentally drove over your cat a week before the wedding and despite the fact that they're being extremely apologetic and trying to do everything to make you feel better, you're still pissed.
• She just got engaged and you don't want her stealing your ideas. (Get over yourself.)
• He's deathly allergic to shellfish and requested a vegetarian option instead of the seafood medly. (99.99999995% of vendors have no problem accommodating this since most are generally opposed to killing people. Liability, you know.)
• They gave you a shitty gift that wasn't on your registry. (Get over yourself.)
• They gave you money and it's not even the amount of a single meal. (Being a guest is not the equivalent of paying for their meal.)
• They looked at you will horror when you honestly said your wedding colors are blush and bashful.
• They're actually bringing a guest when you only put guest on as a courtesy and certainly didn't mean it. (You should have planned for this, and yes, you should always invite a guest, but that's an entirely different post.)
• They like the Mets.

You may uninvite someone (my goodness that just sounds so very harsh) only in the most extreme circumstances:

• Your best friend finally  left that awful son-of-a-bitch who cheated on her . He need not attend. (But even if he is an awful SOB and she's still married to him, you have to invite him. Don't punish her.)
• They try to seduce your fiancee while you're engaged. Not just simple flirting, people do that innocently, I'm talking completely coming on to him. They obviously have no respect for the sanctity of your marriage and have no reason to attend.
• They pose a threat to you or your family members.