Actor Bradley Cooper seems to be wearing Ray-Ban 3025 (also known as the Ray-Ban Aviator) sunglasses in the 2009 comedy The Hangover.

The exact color of Bradley Cooper's Ray-Ban sunglasses seems to be silver frame, with pink or red lenses. The Ray-Ban logo is not visible on the lenses anymore, so the lenses could be custom fitted. The color of the lenses doesn't look like any of the standard Ray-Ban colors, which also suggests a custom lens. UPDATE - a similar pink lens color can now be easily found at the stores links below.

The Ray-Ban RB3025 Aviator is available in several sizes and color combinations. 

Get the Ray-Ban RB3025 Aviator with silver frame online at the official Ray-Ban store, or at Amazon.com.

Or search for pink lens sunglasses on Amazon (many good choices in all price ranges).

Reference: Ray-Ban RB 3025 - Color: Silver frame, pink/red lenses

New article: Compare all Ray-Ban Aviator models