Blake Lively Turns 21!

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Gossip Girl beauty Blake Lively turns 21 today-- but don't expect to see the actress hanging at the nearest bar!

Blake chose to ring in the big day with good ol' fashioned burgers and her boyfriend, Penn Badgely!

The couple grabbed a bite to eat at the famed Burger Joint inside NYC's Le Parker Meridien Hotel. An eyewitness says Blake and Penn both ordered cheeseburgers with the works, fries and milkshakes (strawberry for her, chocolate for him).

After the meal, the couple signed the restaurant's famous wall.