Serena Williams warns Prince Harry, Meghan Markle not to 'overshadow' her

Prince Harry and Meghan Markle were playfully called out by their celebrity tennis pal Serena Williams at the ESPY Awards. 

The tennis ace, who hosted the awards show, warned the Duke and Duchess of Sussex not to 'overshadow' her, referring to the couple's past allegations of attempting to steal the spotlight from the royal family.