What's the best make-up to cover a small bruise? I'm getting married this weekend and need a cover-up fast!

Update: Just to clarify...my fiance is NOT beating me up and the bruise is NOT on my face (jump to conclusions guys!) It's on my arm and I got it when my 3 year old nephew decided to whack me (is that abuse?!) ....sorry if that's not dramatic enough! Thanks to all who sent answers re. make-up.
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