The 21-year-old pop singer Sydney Sierota, the lead singer of the alt-pop band Echosmith along with her three brothers Jamie, Noah, and Graham, attends Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center in Flushing.
The 21-year-old pop singer Sydney Sierota, the lead singer of the alt-pop band Echosmith along with her three brothers Jamie, Noah, and Graham, attends Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center in Flushing.