Zayn Malik Honors Liam Payne with Emotional Tribute on Solo Tour

Zayn Malik has launched his first solo tour, "Stairway to the Sky," in England, marking a significant milestone in his music career. Meanwhile, Matthew Broderick and Sarah Jessica Parker attended the Torino Film Festival in Italy, and Demi Lovato made an appearance at the Teen Vogue Summit in Los Angeles. Prince William was also spotted in London at the Royal Geographical Society, celebrating the launch of the "Jewel of Arabia Expedition." The week has been bustling with celebrity sightings and events across the globe.