Z’s youngest kids Rumi Carter and Sir Carter the spotlight during her Cowboy Carter tour stop in London June 12. See how the crowd marked her twins’ birthday.

Big sister Blue Ivy was present for the special moment Thursday nightNEED TO KNOWBeyoncé wishes her twins a happy birthday during her fourth Cowboy Carter tour stop in London on Thursday, June 12Fans captured the sweet moment on social mediaThe mother of three shares twins Rumi and Sir,

Beyoncé’s Gemini twins, Rumi and Sir Carter, are celebrating a new milestone. The pop star’s two youngest children turn 8 today, and to celebrate, she wished them a happy birthday at last night’s Cowboy Carter Tour stop in London at Tottenham Hotspur Stadium.