She has millions of adoring fans and has  earned millions from her endorsements, TV shows and pop career.

But workaholic Nicole Scherzinger has  admitted she is lonely and at times only has her publicist for company.

The star who has returned as an X Factor  judge for the new series of the talent show, which begins in the autumn,  recently split with  Formula One star Lewis Hamilton after five years  together. 

Workaholic Nicole Scherzinger has admitted she is lonely  and at times has only her publicist for company.

While Nicole has teamed her busy skirt with a head-turning fitted pink shirt  from the same designer, why not let your skirt and legs do the talking and team  with an understated vest of a neutral palette?

Lonely girl: Nicole stays in hotel rooms during the X  Factor auditions and rarely goes out other  than to restaurants with her  publicist and assistant, right, meanwhile ex-boyfriend Lewis Hamilton partied at  the Playboy mansion on Tuesday night

Miss Scherzinger, who was the lead  singer of  American girl group the Pussycat Dolls before leaving to  pursue a solo career,  joined the X Factor panel last year, having  previously been a judge on the US  version of the show.

She mentored the boys’ category, which  included the winning act, James Arthur.

But she was unsure about returning for a  second series, because the commitment interrupts her working on her own  music.

She said: ‘I wasn’t sure. I got to  get the  music right. I’m an artist and I haven’t felt confident enough  with the stuff  that I’m doing. I just haven’t felt like I’ve got enough  of a cohesive album  that I’m proud of to put out.

‘And this takes up a lot of time, you know.  And I always commit myself 110 per cent. So I was torn. But then  Gaz [Gary  Barlow] texted me and I said yes.’

She added: ‘It’s great because we  have  artists versus managers and she [Sharon Osbourne] looks at things  from a  managers point of view and he [Barlow] looks at things from an  artist’s point  of view and I tend to side with him as well.’

As she posed for photographers she confessed she has no  one to turn to because all her family and friends are in America

Speaking during a break from watching hopefuls audition to go through to the boot camp stage of this year’s  competition, Miss Scherzinger also spoke of her admiration for Sharon  Osbourne, 60, who has returned as a judge on the ITV show after five  years  away.

She was one of the original judges, alongside  Simon Cowell, but has never mentored a winning act. Miss Scherzinger said:  ‘She [Mrs Osbourne] brought me onto X Factor, I  was her mentor at her house in  Beverley Hills many years ago.

‘She just  kind of took me under her wing and  she is really lovely as a woman.

Miss Scherzinger spoke of her admiration for Osbourne, 60, who has returned as  a judge on the ITV show after five years away

Enjoying the sunshine: Sharon took the time to sign  autographs and pose for pictures with fans before heading inside

‘It’s really nice to see other women  in the  industry who are kind and give empowerment to others. That’s  rare. Girls, we’re  catty and there’s insecurity but she’s a special  breed, she’s just awesome.

‘She’s just outrageous and fun and a  riot.’

Gary Barlow, 42, who replaced Cowell as head  judge two years ago, has returned for a third series.

He admitted having felt nervous about Mrs  Osbourne joining the show but said his fears were unfounded.

He said: ‘The one thing I was  dreading  though was Sharon coming back and just stealing the whole thing and that’s not  her style at all.

‘She’s come back and, like I said, she’s  brought out the worst in everyone which everyone is loving.

‘And so going onto the set each day,  especially in the rooms, it was just like I can’t wait to get up there and have  a laugh.’

Read more: DailyMail