Actor Will Smith offered some words of advice, as he addressed teenagers at a school in Tulse Hill.
This video posted on Youtube - and shot by Will Smith himself - shows school-girls in Lambeth going wild for their Hollywood visitor.
The Hollywood star - famous for roles in The Fresh Prince of Bel-Air and Men in Black - met students at St Martin-in-the-Fields High School for Girls in Tulse Hill, doing a question and answer session and signing autographs.
Labour MP Chuka Umunna has given Will Smith a tour of Lambeth today, saying that the Hollywood star wanted to see the "real London".
The pair called into a music venue and a coffee shop in Brixton before taking questions from students at St Martin-in-the-Fields High School for Girls in Tulse Hill.