Nicole Scherzinger and Lewis Hamilton have sparked reports they are back together after being spotted holding hands in Los Angeles.

The pair appear to be back on track after their romance came to an end in October last year.

Just four months after their high-profile split, Nicole and Lewis have fuelled reconciliation rumours as they were seen hand-in-hand in Hollywood as they walked to dinner.

Nicole and Lewis split at the end of last year due to their conflicting work schedules. They had been in an on-and-off relationship for four years.

Nicole had been juggling spending time with the Formula One racing driver and her music and TV commitments including her role as a judge on the US X Factor.

Since their break-up, there have been numerous reports that the pair are ready to rekindle their relationship.

Nicole was recently axed from the hit talent show, with reports suggesting that the decision has given her more time to focus on her personal life.

The stunning songstress has previously declared her deep feelings for her former boyfriend.

"I still love him," she admitted to British newspaper The Mirror. "It's all very recent. And it's hard for me to talk about it. But we are good friends. We're great friends."

Since splitting from Lewis, Nicole has been linked to a string of men including professional dancer Derek Hough, rapper Drake and former US X Factor host Steve Jones.

More recently she was pictured getting cosy with a mystery man walking through Los Angeles airport.