There are only three things that are certain in life: death, taxes and celebrities coupling up at the annual Coachella Valley Music and Arts Festival. Since the ever-growing multi-weekend event was cofounded in 1999, A-list couples such as Adam Levine and Behati Prinsloo, and Rande Gerber and Cindy Crawford have headed to the deserts of Indio, California, to bask in the sunlight and take in good music from some of the biggest names in pop, rock, rap, electronic and indie music, among other genres.