Kerry Washington is feeling the love. The actress celebrated her 44th birthday on Sunday, and some of her famous friends took to social media to celebrate the special occasion.Washington's co-star Reese Witherspoon shared a heartfelt tribute to Instagram, where she posted a snapshot of them sitting together in a golf cart on what appears to be a studio lot.«Happy birthday to my amazing friend @kerrywashington!!» Witherspoon, 44, captioned the pic.