Sofia's Diary is a British drama web series distributed through the social networking platform Bebo. Based on the Portuguese series of the same name, which debuted in 2003, it follows the life of a teenage girl named Sofia, portrayed by Rachel Hyde-Harvey. In 2008, the series was acquired by Channel Five, becoming the second web series to be broadcast on British television. Its first two seasons aired on Fiver. After an eight-month hiatus, Sofia's Diary returned to Bebo on May 29, 2009, with a six-week third season. Unlike the previous seasons, new episodes were released twice a week, on Tuesdays and Fridays. The series was initially sponsored by Sure Girl, while the third season was produced in partnership with Transport for London to support a road safety awareness campaign aimed at teenagers.