Pakistan, Aug. 20 -- Dua Lipa and Elton John are celebrating a major milestone, both personally and professionally. They are celebrating their enduring bond of friendship and five years of collaboration with their song, titled Cold Heart. In a joint Instagram post, the Hakuna Matata hitmaker, posted three photos of the duo alongside a caption that read, "Five years since Cold Heart brought us together." He continued, "5.3 billion streams later and five years of a wonderful friendship." "Thank you to all of you for continuing to love and support the track," the British singer, composer and pianist added. Among other three snapshots, one image showed the pair sharing a laugh during John's private Oscars watch party in West Hollywood. For th...