Article continues below advertisementOK! can reveal Prince Harry and Meghan Markle's attendance at Kris Jenner's star-studded 70th birthday bash has sparked fresh tensions within the royal family, potentially jeopardizing their chances of being fully welcomed back into royal life.The couple, ages 41 and 44 respectively, joined a glittering guest list at the Beverly Hills estate of Amazon founder Jeff Bezos and his wife, Lauren Sánchez, last month for the Hollywood-themed party.Article continues below advertisementSource: MEGAThe pair attended Kris Jenner's party.