And it's all down to water! Jennifer Aniston looks better than ever at 45 as she poses in tank top and jeans for new Smartwater ad

By Daily Mail Reporter

She's been a household name since she rocketed to fame as Rachel Green on Friends in the mid-Nineties.

But nearly two decades on and Jennifer Aniston looks as good as ever - and it seems it's all down to her love of water.

The 45-year-old star looked stunning as she showed off her svelte figure in a new advertisement for Glacéau Smartwater.

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Natural beauty: Jennifer Aniston, 45, looked better than ever in a plain white tank top and blue jeans in a recently released advertisement for Smartwater

Natural beauty: Jennifer Aniston, 45, looked better than ever in a plain white tank top and blue jeans in a recently released advertisement for Smartwater

  

Keeping it simple, Jennifer plugged the electrolyte enhanced water in a plain white tank-top and jeans.

She rocked the plain Jane look while posing with the product and looking up toward the sky against a cloudy background.

The We're The Miller star wore her blonde locks down in the advertisement and had natural, complementary make-up on her face. 

Plain Jenn: The actress became a household name in her portrayal of Rachel Green on popular sitcom Friends, which premiered nearly two decades ago

Plain Jenn: The actress became a household name in her portrayal of Rachel Green on popular sitcom Friends, which premiered nearly two decades ago

Accoring to Us Weekly, the image vivid image 'inspired by the clouds' was taken by celebrity photographer Mark Seliger.

This is not the first ad campaign that the former Friends star has had with the company as she has been a spokesperson for the company since 2007.

Last month Jennifer was seen in a much different look while on set of her latest movie Cake, on location in the San Fernando Valley.

Shades of grey: Last month, Jennifer wore a rather drab ensemble, which featured a loose-fitting grey top and darker-coloured cardigan

Shades of grey: Last month, Jennifer wore a rather drab ensemble, which featured a loose-fitting grey top and darker-coloured cardigan

The fianceé of actor Justin Theroux was seen dressed head-to-toe in a rather drab ensemble, which featured a loose-fitting grey top and matching cardigan.

And it seems that film's premise is just as depressing as the star's wardrobe.

Jennifer plays a woman who becomes fascinated by another woman she meets in her 'chronic pain support group' who eventually commits suicide.

Leading man: The We're The Millers star has been engaged to actor Justin Theroux since 2012

Leading man: The We're The Millers star has been engaged to actor Justin Theroux since 2012

The film comes from one of the same producers as The Departed and is expected to be a different route from Jennifer's usual genre of comedy.

She can be seen in a familiar comedic role later this year as she reprises her role as sexually aggressive dentist Julia Harris in Horrible Bosses 2.

The sequel boasts an all-star cast including Jason Sudeikis, Jason Bateman, Charlie Day, in addition to new castmembers Chris Pine and Christoph Waltz.

The comments below have not been moderated.

So anyone who is still in any doubt as to why Brad left this nuff nuff for Angelina, here is your answer: insubstantial, artificial, self-absorbed waste of space.

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So anyone who is still in any doubt as to why Brad left this nuff nuff for Angelina, here is your answer: insubstantial, artificial, self-absorbed waste of space.

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I suppose those making the catty remarks don't wear makeup, visit a hairdresser, struggle into Spanx, exercise or eat healthy? Nothing wrong with any of those things, but don't criticize someone who's in the public eye for making every effort to look good.

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Jennifer has never had kids and has millions of dollars at her disposal. I wouldn't trade my life or bank account for hers. I've had four kids and eat dinner every night. Life is good.

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Photoshopped to the hilt.

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I didn't know Photoshop worked by water?

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She's a good actress, not great but she is better than Nicole Kidman. She's cute and seems like a very likable person. While she can't carry a movie, she melds well in an ensemble cast. I think it's great that she is trying a different genre of movie - it's good to stretch.

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She always seems more human than that scrawny Angelina.

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for her it IS the water, although it's the millions in her bank account from the ads which gives her all the options of personal chef, time for exercise and all the best quality food there is...

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We'd all look great in smart water ads if we were as photoshopped as Jennifer clearly is in this one.

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i'm not so sure that water is smart but jen is because she does excercise, eats well , doesn't have children, lives in a malibu beach house etc that water has nothing to do with any of that. I doubt she even drinks anything from plastic in case bpa has leaked into it. Smart con water

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