At the 2011 MTV Video Music Awards, Beyoncé revealed that she was pregnant with their first child.[188][189] Their daughter, Blue Ivy, was born at New York's Lenox Hill Hospital on January 7, 2012.[190] Jay-Z released "Glory", a song dedicated to their child, through his website on January 9, 2012.[191] The song detailed the couple's pregnancy struggles, including a miscarriage Beyoncé had suffered.[191] Because Blue's cries were included at the end of the song and she was officially credited on the song as "B.I.C", she became the youngest person ever (at two days old) to appear on a Billboard chart when "Glory" debuted at No. 74 on Hot R&B/Hip-Hop Songs.[192] On June 18, 2017, Beyoncé's father Mathew Knowles confirmed that she and Jay-Z had welcomed twins: a daughter named Rumi and a son named Sir.[193]