Impress your guests this holiday weekend by serving the cucumber martini that was featured at Gossip Girl star Ed Westwick's 22nd birthday bash. Friends and fellow Upper East Siders, including Blake Lively and Westwick's girlfriend Jessica Szohr, sipped on the cool cocktail which was served up at N.Y.C. celebrity hot spot, Lucky Strike Lanes & Lounge.

Ingredients:
• 3 Cucumber slices
• 2 Ounces gin
• 1 Ounce white cranberry juice
• 1 Splash sour mix
• 1 Pinch sugar

Directions:
Muddle the cucumber in a shaker until the juice is extracted. Add all other ingredients, including ice, and shake vigorously. Strain into a martini glass and garnish with a cucumber wheel.

—Amy Barton