Justin Timberlake and Jessica Biel at Mercedes-Benz IMG New York Fashion Week Fall 2009 - William Rast - Departures, New York City, USA - 16.02.09

The pop superstar was asked to fill in for an absent Rihanna at the Grammys on 8 February (09) - and he faced the prospect of having to persuade his hero Al Green to join him onstage.

But that last minute phonecall to a bathing Green was nowhere near as nerve-racking as his fashion show.

Before his latest designs hit the runway, Timberlake said, "I think I'm actually a little more nervous tonight than I would be calling Al Green two hours before the Grammys and asking him to come sing Let's Stay Together."

Source: WENN