Less than a month after Harry Styles slipped a massive $500,000 diamond on fiance Zoë Kravitz’s ring finger, the couple are already planning two weddings, sources have revealed to Page Six. The transatlantic couple raised eyebrows by getting engaged after just eight months of dating, but sources say their plans are already full steam ahead. “I know for a fact Zoë would want to do something in New York because of her dad, so if anything it’s going to be two weddings,” a source close to the Kravitz family told Page Six, referring to Kravitz’ rock star father Lenny. “Dad still lives in downtown [Manhattan]. It could be at the Fouquet’s Hotel. If she does two [weddings] it would be one in London and one in New York. After eight months of dating, the “Aperture” singer, 32, and the “Caught Stealing” actress, 37, have turned up the volume on their relationship with an engagement that’s rocked pop culture.…