Lauren Sánchez is celebrating her friend Katy Perry's 41st birthday with a touching tribute. Jeff Bezos' wife, 55, shared photos of her and Perry via Instagram Stories on Saturday, October 25, calling the "Roar" singer her "girl." "Happy birthday @katyperry I love you to space and back," she wrote over a black-and-white photo of the pair, adding rocket, star and heart emojis. She shared another post with three additional pictures, writing, "Did I mention it's my girls [sic] birthday. Oh how I love you @katyperry." Both posts were set to Perry's songs "Birthday" and "California Gurls.