Justin Bieber, Katy Perry and One Direction are all up for awards at a new prizegiving which honours the biggest stars of social networking. The inaugural Social Star Awards will focus on the celebrities who are making waves on the web, connecting with millions of fans around the world through the likes of Twitter, Facebook and YouTube. Bieber, Perry, Psy and Rihanna, who all boast huge online profiles, will compete for the Most Popular Music Solo Artist prize, while Jackie Chan, Justin Timberlake, Selena Gomez and Will Smith are all up for the Most Popular Actor award. Linkin Park, LMFAO, Maroon 5 and One Direction will battle it out for the Most Popular Music Group honour. Jessica Alba will host the ceremony, which will take place at the Marina Bay Sands resort in Singapore on 23 May (13), and will be streamed live on YouTube.com. She says, "I'm thrilled to be co-hosting the first-ever Social Star Awards and look forward to seeing everyone in Singapore to celebrate these social media superstars." Aerosmith, Cee Lo Green, Psy, and Carly Rae Jepsen will all perform at the event.