By Ayeesha Walsh Meghan Markle ‘s mother Doria Ragland posed alongside Beyoncé’s mum Tina Knowles as they stepped out to a glamorous event hosted by Prince Harry and Meghan. The two celebrity mums were seen rubbing shoulders with several influential figures at the Duke and Duchess of Sussex’s elite gathering held to celebrate The Kinsey African American Art and History Collection last month. Pictures from the event were shared to the museum’s Instagram page as they proudly gushed over the exhibition held at Sofi Stadium at Hollywood Park. Both Doria and Tina looked delighted to be in attendanc…