Nicole Scherzinger plasters on a smile as she arrives at X Factor audiences in silver jeans

Onwards and upwards: Nicole Scherzinger puts Lewis Hamilton drama behind her as she returns to work on The X Factor

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UPDATED:

12:46 GMT, 17 July 2012

As she arrived in London at the weekend, Nicole Scherzinger couldn't even force herself to smile but today she was back to her best.

The 34-year-old singer arrived at the X Factor auditions in Liverpool today with a huge grin on her face proving that she's put her rumoured troubles with boyfriend Lewis Hamilton to one side.

The former Pussycat Dolls star put her work first following rumours she was left angry and upst after racing driver Hamilton was spotted partying with a group of girls in London last week.

Leaving her troubles behind: Nicole Scherzinger forgot all about her problems with Lewis Hamilton as she arrived at the X Factor auditions in Liverpool today

Leaving her troubles behind: Nicole Scherzinger forgot all about her problems with Lewis Hamilton as she arrived at the X Factor auditions in Liverpool today

Now you see it, now you don't: The singer forgot to smile at times and instead looked rather glum

Now you see it, now you don't: The singer forgot to smile at times and instead looked rather glum

Now you see it, now you don't: The singer forgot to smile at times and instead looked rather glum

Nicole showed off her toned figure in a pair of silver spray-on jeans which she teamed with a long white printed T-shirt and a black PVC waistcoat as she arrived to shoot scenes for the bootcamp stage of the X Factor process this morning.

She completed her look with a pair of black ankle boots and lots of jewellery as she arrived at the hotel.

Her long dark hair was left down in loose curls and the singer's make-up was immaculate as she smiled for the cameras and saluted with the peace sign.

Still stylish: The former Pussycat Doll arrived at the hotel wearing silver spray-on jeans and a black PVC waistcoat

Still stylish: The former Pussycat Doll arrived at the hotel wearing silver spray-on jeans and a black PVC waistcoat

Still stylish: The former Pussycat Doll arrived at the hotel wearing silver spray-on jeans and a black PVC waistcoat

Perhaps Nicole had sorted through her problems with the Formula One racing driver, or maybe she was still feeling upset after he was said to have partied at a Mayfair hotel with a group of ten women.

At times it seemed as if Nicole forgot about the cameras and the need to smile, and instead looked quite fed up as she was followed inside by her fellow judges.

Next to arrive was Gary Barlow who also had a huge grin on his face as he made his way inside to begin filming the ITV1 show.

Here come the boys: Fellow judges Gary Barlow (L) and Louis Walsh were also seen arriving in Liverpool

Here come the boys: Fellow judges Gary Barlow (L) and Louis Walsh were also seen arriving in Liverpool

Here come the boys: Fellow judges Gary Barlow (L) and Louis Walsh were also seen arriving in Liverpool

The Take That singer was dressed quite casually in a pair of camel-coloured chinos and a grey and blue long-sleeved top.

Next to arrive was Louis Walsh who was seen carrying a large black bag.

The Irish star wore dark blue jeans, a grey T-shirt and a navy blazer as he posed briefly in the rain.