She's hot then she's cold: Britney Spears steps out in mismatch ensemble as she struggles to dress for the right season

PUBLISHED: 12:35 EST, 21 September 2012 | UPDATED: 12:38 EST, 21 September 2012

She's had her fair share of fashion fails throughout her career but as she waved goodbye to her twenties, she seemed to finally find her feet in world of fashion.

But returning to her former self on Thursday Britney Spears failed to put all that she had learned about how to look good to use.

The 30-year-old was pictured in Los Angeles picking up a few bits from an Old Navy store in an ensemble that truly battled the seasons.

Fashion fail: Britney Spears was pictured on Thursday shopping at an Old Navy store in Los Angeles

Ready for winter in a short sleeved turquoise polo neck, Britney bizarrely chose to team the cotton top with a pair of stone coloured short shorts.

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With the bottom half of her outfit adhering to the sunny Californian weather, a pair of grey suede peep toe heels completed her look.

The mother-of-two wore her blonde locks, which feature highlights of blue up in a messy bun, and went heavy on the eye make-up whilst accessorising with pieces of silver jewellery.

Spears beamed as she left the store with several bags in hand, no doubt full of gifts for her boys Sean and Jayden Federline.

What was she thinking? Britney stepped out in a turquoise polo neck jumper and short shorts

Not her best look: The 30-year-old completed her look with peep toe heels and wore heavy eye make-up

Happy shopper: Britney beamed as she left the store with several carrier bags in hand

Currently enjoying her latest career venture on the US version of The X Factor, Britney and her fellow judges, Simon Cowell, Demi Lovato and LA Reid, are riding high on the success of the show.

Figures reveal that Wednesday's show attracted 8.2 million viewers in its first hour and more than 10 million in its second, compared to The Voice which aired at the same time and only managed to attract 5.5 million viewers.

Showing off her highlights: The Toxic singer wore her hair up in a messy bun

Gifts for her boys: The pop sensation no doubt picked up various bits and bobs for hers sons Sean and Jayden

This compares to the previous Wednesday when the premiere of the second series only scored an average of 7.5million viewers when it aired between 8 and 9pm.

The lack-lustre rating meant it lost out to The Voice which attracted an average of 10.5 million viewers.

When the first series of The X Factor USA premiered on September 21st 2011, 12.5 million viewers tuned in.

Busy lady: Britney is currently enjoying her time as a judge on the US version of The X Factor

The latest figures will hopefully be reassurance to Cowell that his recent shake-up, which saw him dismiss Paula Abdul and Nicole Scherzinger from the panel, will help make the show successful.

The music mogul is likely to be delighted about the victory, as he previously blasted NBC bosses for moving The Voice's time slot so it directly competed with The X Factor USA.

And enjoying watching herself on her TV screen, on Wednesday Britney tweeted: 'Another #xfactor week gone bye. Single tear! SO happy with how these episodes turned out :)'.

On the winning team: This week The X Factor proved victorious in the TV ratings when they bagged 5 million more viewers than The Voice

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She has a figure like my uncle Jack and he drinks 30 pints of Harvey's a week.

- Peter , Sussex, United Kingdom, 22/9/2012 11:40

Click to rate Rating 215

English girls - take some tips from a very beautiful American woman!

- Byron Barnes , Manchester, United Kingdom, 22/9/2012 11:31

Click to rate Rating 452

there is NOTHING wrong with her top or outfit. do you guys not have anything better to comment on?

- shi_vonne , san francisco, United States, 22/9/2012 11:28

Click to rate Rating 117

her boobs are slowly coming in for a landing

- Internetcynic , Lincoln, United Kingdom, 22/9/2012 11:27

Click to rate Rating 328

Oh dear.. Sack the stylist Britney! She could look beautiful and classy if she just wore the right clothes.. She seems to be stuck in her teenage, too-tight wardrobe.. :-/

- Caroline , Ireland, 22/9/2012 11:04

Click to rate Rating 202

Do people need to be perfect every minute of every day? If they do i have certainly failed!

- Nev496 , Milton Keynes, United Kingdom, 22/9/2012 10:48

Click to rate Rating 200

how is this mismatched?! alright, considering how much money she has she probably could have stepped out in something a little better, but who doesn't have those days when they can't be bothered to do anything with their look?!

- ellielouise , Warrington, 22/9/2012 10:47

Click to rate Rating 115

She could wear a bin bag and I would still say YES PLEASE!

- lightsaber , UK, 22/9/2012 10:36

Click to rate Rating 22

who seriously dresses up to go shopping some of you are ridiculous

- Justmyopinion , sussex, 22/9/2012 10:30

Click to rate Rating 170

Gosh you must have to try really hard to get your outfit that wrong bless her!

- Maya , Brighton, 22/9/2012 10:14

Click to rate Rating 18

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