Star of 12 Years A Slave, Lupita Nyong'o visited Harris Westminster Sixth Form, London to mentor young women on leadership and the importance of literacy in an event hosted by the National Literacy Trust in partnership with Lancôme.

Nyong'o, now a best-selling author, told the BBC she didn't even like reading when she was young.

Producers: Jeanette Long and Alex Dackevych

Camera: Neil Paton

Correction, 7 February: This video has been amended to remove a contributor's claim that the UK has the lowest teenage literacy rates in the OECD