Madonna's 12-year-old twin daughters Stella and Estere proved they're growing up so fast while posing for a photo with Billie Eilish after attending her Oct. 17 concert in New York City.

Here's your ultimate guide to the biggest tours and festivals of 2025, featuring Kendrick Lamar, Billie Eilish, Sabrina Carpenter, The Weeknd, Sza, Hozier, Metallica, and more.