![Elton John on Twitter: "#HappyBirthday to Billie Jean King, the tennis champ who inspired Elton's hit song, 'Philadelphia Freedom'. 🎂🎉 https://t.co/3vzK7dqTH2" / Twitter Elton John on Twitter: "#HappyBirthday to Billie Jean King, the tennis champ who inspired Elton's hit song, 'Philadelphia Freedom'. 🎂🎉 https://t.co/3vzK7dqTH2" / Twitter](https://pbs.twimg.com/media/DPPBrqkX0AArc8t.jpg)
Elton John on Twitter: "#HappyBirthday to Billie Jean King, the tennis champ who inspired Elton's hit song, 'Philadelphia Freedom'. 🎂🎉 https://t.co/3vzK7dqTH2" / Twitter
![24 4th Annual Rfk Pro Celebrity Tennis Tournament Stock Photos, High-Res Pictures, and Images - Getty Images 24 4th Annual Rfk Pro Celebrity Tennis Tournament Stock Photos, High-Res Pictures, and Images - Getty Images](https://media.gettyimages.com/id/156126915/photo/athlete-billie-jean-king-and-musician-elton-john-attend-fourth-annual-robert-f-kennedy-pro.jpg?s=612x612&w=gi&k=20&c=rdAD48vJnNb9Q-s5Lt5JnePq_89dq-4vRsswVmv2gvs=)
24 4th Annual Rfk Pro Celebrity Tennis Tournament Stock Photos, High-Res Pictures, and Images - Getty Images
![Elton John and good friend Billie Jean King look like twins at Las Vegas AIDS event | Daily Mail Online Elton John and good friend Billie Jean King look like twins at Las Vegas AIDS event | Daily Mail Online](https://i.dailymail.co.uk/i/pix/2016/10/12/00/394E321E00000578-3833507-image-m-4_1476227834044.jpg)
Elton John and good friend Billie Jean King look like twins at Las Vegas AIDS event | Daily Mail Online
![Billie Jean King on Twitter: "Elton John has announced that the final two shows of his Farewell tour in North America will take place at Dodger Stadium next year. I'll never forget Billie Jean King on Twitter: "Elton John has announced that the final two shows of his Farewell tour in North America will take place at Dodger Stadium next year. I'll never forget](https://pbs.twimg.com/media/E4lz6ELXwAgq3IM.jpg)
Billie Jean King on Twitter: "Elton John has announced that the final two shows of his Farewell tour in North America will take place at Dodger Stadium next year. I'll never forget
![Billie Jean King on Twitter: "Four decades of friendship and we're not done yet! Happy birthday to my dear friend, Elton John! https://t.co/NTcB3KaWeQ" / Twitter Billie Jean King on Twitter: "Four decades of friendship and we're not done yet! Happy birthday to my dear friend, Elton John! https://t.co/NTcB3KaWeQ" / Twitter](https://pbs.twimg.com/media/D2gXwe6XgAAKwg0.jpg)
Billie Jean King on Twitter: "Four decades of friendship and we're not done yet! Happy birthday to my dear friend, Elton John! https://t.co/NTcB3KaWeQ" / Twitter
![Billie Jean King Reveals All About Friendship with Elton John & Tennis Sensation Emma Raducanu | LK - YouTube Billie Jean King Reveals All About Friendship with Elton John & Tennis Sensation Emma Raducanu | LK - YouTube](https://i.ytimg.com/vi/ijUnVdTIfvo/maxresdefault.jpg)
Billie Jean King Reveals All About Friendship with Elton John & Tennis Sensation Emma Raducanu | LK - YouTube
![File:Mylan Executives Heather Bresch and Robert J. Coury with Elton John and Billie Jean King.jpg - Wikimedia Commons File:Mylan Executives Heather Bresch and Robert J. Coury with Elton John and Billie Jean King.jpg - Wikimedia Commons](https://upload.wikimedia.org/wikipedia/commons/2/22/Mylan_Executives_Heather_Bresch_and_Robert_J._Coury_with_Elton_John_and_Billie_Jean_King.jpg)
File:Mylan Executives Heather Bresch and Robert J. Coury with Elton John and Billie Jean King.jpg - Wikimedia Commons
![Music superstar Elton John and long-time friend Billie Jean King will host the 15th annual Advanta World Team Tennis Smash Hits, a special night of tennis featuring Andy Roddick Lindsay Davenport and Music superstar Elton John and long-time friend Billie Jean King will host the 15th annual Advanta World Team Tennis Smash Hits, a special night of tennis featuring Andy Roddick Lindsay Davenport and](https://c8.alamy.com/comp/2E58R3E/music-superstar-elton-john-and-long-time-friend-billie-jean-king-will-host-the-15th-annual-advanta-world-team-tennis-smash-hits-a-special-night-of-tennis-featuring-andy-roddick-lindsay-davenport-and-anna-kournikova-the-event-benefits-the-elton-john-aids-foundation-and-the-local-charity-actionaids-the-pavilion-at-villanova-uniiversity-villanova-pa-101007-bat-2E58R3E.jpg)
Music superstar Elton John and long-time friend Billie Jean King will host the 15th annual Advanta World Team Tennis Smash Hits, a special night of tennis featuring Andy Roddick Lindsay Davenport and
![Elton John and Billie Jean King 15th annual 'Advanta World TeamTennis Smash Hits' at the Villanova University Villanova Stock Photo - Alamy Elton John and Billie Jean King 15th annual 'Advanta World TeamTennis Smash Hits' at the Villanova University Villanova Stock Photo - Alamy](https://c8.alamy.com/comp/C070CT/elton-john-and-billie-jean-king-15th-annual-advanta-world-teamtennis-C070CT.jpg)
Elton John and Billie Jean King 15th annual 'Advanta World TeamTennis Smash Hits' at the Villanova University Villanova Stock Photo - Alamy
![95 Mylan World Teamtennis Matches With Elton John And Billie Jean King Stock Photos, High-Res Pictures, and Images - Getty Images 95 Mylan World Teamtennis Matches With Elton John And Billie Jean King Stock Photos, High-Res Pictures, and Images - Getty Images](https://media.gettyimages.com/id/450321235/photo/tennis-legend-billie-jean-king-and-singer-sir-elton-john-smile-during-the-mylan-world.jpg?s=612x612&w=gi&k=20&c=kdX89lm7ao_7gtK99f8LQJi4CZgC69U8ZFOiT-40XpU=)
95 Mylan World Teamtennis Matches With Elton John And Billie Jean King Stock Photos, High-Res Pictures, and Images - Getty Images
![Elton John and Billie Jean King at the 18th annual World Team Tennis (WTT) Smash Hits presented by GEICO, a charity tennis event benefiting the Elton John AIDS Foundation and the Washington Elton John and Billie Jean King at the 18th annual World Team Tennis (WTT) Smash Hits presented by GEICO, a charity tennis event benefiting the Elton John AIDS Foundation and the Washington](https://c8.alamy.com/comp/2MW404K/elton-john-and-billie-jean-king-at-the-18th-annual-world-team-tennis-wtt-smash-hits-presented-by-geico-a-charity-tennis-event-benefiting-the-elton-john-aids-foundation-and-the-washington-aids-partnership-held-at-bender-arena-at-american-university-prior-to-the-tennis-match-players-attended-a-vip-reception-and-participated-in-a-live-auction-washington-dc-111510-2MW404K.jpg)