Jessie J is opening up about the emotional embrace she shared with Kate Middleton at the Royal Variety Performance last month. The “Price Tag” singer discussed her decision to hug the Princess of Wales during the Nov. 19 event – and break royal protocol in the process – while on the UK show “This Morning” on Wednesday. “I was briefed not to, but I just saw a mom that has also gone through cancer publicly, and I just wanted to give her a hug,” Jessie, 37, explained. “It was as simple as that.” “