The most foul, regrettable party pictures poured in for our 21st Birthday Contest -- so watch out ... just clicking through the pics could give you a hangover!
**Be sure to check back on Monday to help decide who is going to score the $250 prize!**
TMZ's 21st Birthday Bash -- The Finalists!!!
7/4/2009 5:25 AM PDT BY TMZ STAFF
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