Orlando Bloom and his fiancée Katy Perry have the best relationship with the actor's ex-wife Miranda Kerr, and that was clear to see on Wednesday as the singer shared the cutest video of them together.MORE: Celebrities sunning themselves in Italy: Julianne Hough, Amy Robach, Katy Perry, moreTaking to Instagram, Katy posted a video of her and Miranda promoting the former Victoria's Secret model's Kora Organics products. WATCH: Katy Perry and Miranda Kerr spend the day together at new launch"Spent