Photos in the gallery courtesy of photographer Marie Hoopes (@missmarieelyse). Thank you! Yesterday, LP took part in a music festival held annually in San Francisco, California, at Golden Gate Park titled The Outside Lands Music and Arts Festival. LP was joined by her girlfriend, Lauren and many of her friends. LP performed late in the afternoon, at a smaller Sutro Stage. Last night’s headliners were Portugal The Man (love his “Feel It Still”) and Janet Jackson. As for LP, not…