The Pussycat Doll beauty did her best to lift the racing champ's spirits as he faced his lowest-ever starting position in the Formula One race at Silverstone, leading him to the pit lane with a smile on her face.
Unfortunately her presence didn't affect the outcome too much as he only managed 16th place out of 18.
Lewis, who won the race last year, has admitted this season hasn't been great due to problems with his car. But he told a radio interviewer recently he's happier than ever in his personal life with his American girlfriend, and that "I pinch myself when I look at her".
Famous faces among the 30,000 fans who turned up for the British Grand Prix over the weekend included Harry Potter star Rupert Grint and the Duchess of York, who caught up with Olympic gold medalist Chris Hoy and his fiancée Sarra Kemp.
Footballer-turned-actor Eric Cantona was also there, and was spotted hanging out with Spanish driver Fernando Alonso.