No that would be stupid, so stupid. Particularly at a wedding.
Think understated, particularly in terms of the main parts of your outfit. Wear a white or light blue shirt, and grey or otherwise light coloured pants, and make a statement with your tie, be it through colour or pattern.
Also, have you tried going to op-shops for a suit? It's really not that hard to find something nice for an absolute bargain.
Also, white ties tend to be worn by the groom/groomsmen, so they're definitely a no-go. It's like a girl wearing a white dress to someone else's wedding.