A Battle of the Hottest Summer Destinations: 's that time of the season when a scroll through Instagram reveals that everyone is on vacation. And the two favorite destinations of celebrities and models? The Spanish island of Ibiza and Mykonos, Greece . Here, a breakdown of who's visiting, and what they're up to. Tribes Mykonos: Brazilian models, Instagram stars. Ibiza: Actors and athletes. The A-List Mykonos: Gerard Butler, Eugenie Niarchos, models Isabeli Fontana, Adriana Lima and Alessandra Ambrosio. Ibiza: Ruby Rose, Cristiano Ronaldo, Maria Sharapova, Spice Girl Melanie Brown, Eva Longoria, Doutzen Kroes. Hot Spot Mykonos: Cavo Paradiso Ibiza: Pacha Cultural Moment Mykonos: " Greek Gotham ," an exhibit of New York artists including Mira Dancy and KAWS at the scenic Dio Horia gallery, in a show curated by art adviser and designer MarĂa Brito. Ibiza: " Time and Space the Speed of Light ," 13 solid-basalt columns th...