Britney Spears is like a mother to her US 'X Factor' contestants.

The 'Toxic' singer mentors the youngest singers on the Fox reality show and they believe that as she has two kids herself - Sean Preston, seven and six-year-old Jayden James - Britney instinctively looks out for their best interests in the competition.

Speaking at the 'X Factor' finalists party in Los Angeles on Monday (05.11.12), Beatrice Miller, 13, exclusively told BANG Showbiz: ''Britney is the best, I had all her music growing up so to be able to ask her advice is amazing. She's so nurturing. I was having a lot of trouble with my voice this morning and she totally understood. She totally respected the fact that I was unwell and said 'Just do whatever you feel is necessary'.''

Carly Rose Sonenclar, 13, was also having voice issues this week and agreed that Britney made sure each of her contestants were looked after.

She added at the bash held at The Bazaar at the SLS Hotel in Beverly Hills: ''She's very personable and fun and hands on. She's very open to questions and suggestions. I've been worried about my voice this week and I feel like I can go to Britney with any issues I have.''

Arin Ray, 17, has returned to the 'X Factor' as a solo artist after auditioning as part of a group last year and is thrilled to have Britney as his mentor.

He said: ''To come back this year and have Britney as my mentor is just amazing. The way we bonded was incredible, I hope to some day be as successful as her. She shows you how to still be relevant in the industry from a young age.

''She's there for me. She's so protective of us and just wants the best for all of her contestants.''

'The X Factor: USA' airs on ITV2 Thursday (08.11.12) from 8 - 10pm