Her former sparring partner on The Voice Adam Levine famously sings the song Harder to Breathe.
And Christina Aguilera may feel like doing a cover version after she was spotted in a pair of extremely tight jeans in Los Angeles on Monday.
She squeezed her curves into the bottoms before going to see Rihanna's concert in the city with her boyfriend Matthew Rutler.
The pair looked excited to find out what all the fuss was about with the saucy singer's Diamonds World Tour.
And she looked like she had decided to dress for the occasion, also wearing a tight leather jacket, top and baseball cap.
It is not the first time the Dirrty star has showed of her new slimmer-line look.
For she turned heads in a little black and white dress as she arrived for a screening of NBC's The Voice Season 4 in Hollywood last month.
Last year Christina said she was totally unrepentant about the way her clothes advertise her assets.
She said: 'Actually, the challenge I’ve always had is being too thin, so I love that now I have a booty, and obviously I love showing my cleavage.'.
'Hey, if you can work it and you can own it, that confidence is going to shine through.'
And Christina Aguilera may feel like doing a cover version after she was spotted in a pair of extremely tight jeans in Los Angeles on Monday.
She squeezed her curves into the bottoms before going to see Rihanna's concert in the city with her boyfriend Matthew Rutler.
Close fit: Christina Aguilera squeezed her
curves into a pair of very tight jeans as she attended the Rihanna
concert with her boyfriend Matthew Rutler on Monday night
And she looked like she had decided to dress for the occasion, also wearing a tight leather jacket, top and baseball cap.
It is not the first time the Dirrty star has showed of her new slimmer-line look.
For she turned heads in a little black and white dress as she arrived for a screening of NBC's The Voice Season 4 in Hollywood last month.
Curvy: Perhaps Christina wanted to show rival Rihanna her own famous figure backstage after her show
New look: Christina seems to be taking every opportunity to show off her slimmer-line frame
Feeling smug: The Dirrty singer new that all eyes would be on her as she sauntered up to the venue
She said: 'Actually, the challenge I’ve always had is being too thin, so I love that now I have a booty, and obviously I love showing my cleavage.'.
'Hey, if you can work it and you can own it, that confidence is going to shine through.'
A couples night out: She brought along her beefcake boyfriend to enjoy the high quality music
Following suit: Rosie Huntington-Whiteley wore a pair of tight pink leather trousers as she went to the show
Legs like Bambi: The Victoria's Secret favourite seemed to revel ins showing off her perfect pins