Article continues below advertisementZendaya and Tom Holland stepped out for a rare public outing in London.The couple, both 29, attended the Posh Pub Quiz at Christie's auction house on September 20, a charity event hosted by The Brothers Trust, the organization Holland co-founded with his parents and brothers.Article continues below advertisementSource: @laurahopewhitaker/InstagramZendaya and Tom Holland attended a charity event in London.