Singer Rita Ora has denied on Twitter claims that she was the woman with whom Jay Z, Beyoncé's husband, allegedly had an affair - an incident that Beyoncé is said to have sung about on a new album.Fans of Beyoncé - dubbed collectively The Beyhive - have been trying to figure out who "Becky" in the lyrics might be.Although rumours that the rapper cheated on Beyoncé have been around since her sister, Solange Knowles, attacked him in a lift in May 2014, they have been given further credence with the release of Lemonade, a visual album.Songs on the acclaimed album include words such as "You can taste the dishonesty/It's all over your breath as you pass it off so cavalier" - on Pray You Catch Me - and: "He only want me when I'm not there/He better call Becky with the good hair".Ora, whom Jay Z signed to his label Roc Nation in 2008, said: "I never usually address tabloid gossip but let me be clear, these rumours are false."The Beyhive has also speculated that Becky might be Rachel Roy, a fashion designer. Shehas also denied the rumours.On Instagram, Roy had shared an image with the caption: "Good hair don't care but we will take good lighting, for selfies, or self truths, always. Live in the light #nodramaqueens."..