Lucky for Donnie Wahlberg, New Kids on the Block fans are now old enough to get into bars.
Donnie's 39th bday bash landed at Jet Nightclub last night at the Mirage in Las Vegas -- where Berg, Joey McIntyre and Danny Wood all celebrated like adults.
Caught Partying with Kids
8/17/2008 8:12 AM PDT BY TMZ STAFF
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