Source: Bang Showbiz NewsRihanna held a party on board her Delta Boeing plane to mark the start of her '777' tour.The 'Diamonds' singer began her "rock 'n' roll adventure" by serving champagne, cognac and tequila on board her private 777 Delta Boeing aircraft on Wednesday (14.11.12) as she and her guests flew from Los Angeles to Mexico City for the first concert of her unique run of shows. The '777' tour sees Rihanna perform concerts in seven different cities in seven different countries in North America and Europe in seven days to promote her new album 'Unapologetic'.Rihanna, 24, greeted her Rihanna Navy fans and invited journalists as they boarded by shouting into a microphone: "Hello! This is 777. Let's get drunk! I love you! We will transform this jumbo jet into a tour bus ... We're practically living on this thing for a week: sleeping, partying, all together... it's going to be a wild ride. "I wanted it to be a rock 'n' roll adventure, and I think when it's over it will be the coolest thing I've ever done."Rihanna then proceeded to pour alcohol directly into people's mouths.Those who were hoping to get some sleep during the flight were kept awake by the Bajan singer shouting: "You really want to black out? Here's some cognac. Who wants some?"Before the plane touched down in Mexico guests were given a special gift bag personally put together by Rihanna, which included flight socks, a T-shirt, perfume and a diamond braceletShe announced: "It looks s**t and cheap but if you read the fine print, it's a real diamond."I don't want anyone to lose that - and you can't say you've never had a diamond in your life."Rihanna and her 18-strong entourage, which includes a massage therapist, various stylists and security, were escorted by police to the venue where she performed to a crowd of 2,000.Rihanna's next stop is Toronto, Canada, where she will play to an even smaller crowd of 1,400 on Friday evening (Nov 16).