Jennifer Lopez and Reese Witherspoon both attended the March of Dimes Celebration of Babies Luncheon in Hollywood today, and both women employed different strategies when they got dressed for the event. While Witherspoon chose a grey sheath dress that hugged her body and stopped right above the knees, Lopez went a little more glamorous. Her strapless, leaf-print Bibhu Mohapatra dress looked a good deal more formal in comparison. We like both dresses, but we're curious to see which approach you like more. See more pictures and cast your vote here.