Spotted out hiking in LA with pal Pixie Geldof - as you do - Alexa took a Vita Coconut Water pit stop.
So what's it all about, should 2014 be your year of the coconut?
What is coconut water?
Unsurprisingly, it is water from a coconut! It is amazing for improved hydration and a boost of calcium, magnesium, phosphorus, sodium and potassium.
This is coconut water, not milk, so it has all the nutrients without the calories.
Why do celebs love it?
Coconut water is naturally low in calories, virtually fat and cholesterol free and packed with more potassium than four bananas. Not bad eh?
It is even been dubbed it 'Mother Nature's Sports Drink' as it contains easily digestible carbohydrates in the form of sugar and electrolytes.
No wonder gym bunnies Millie Mackintosh and Jessie J can't get enough.
It's also a brilliant hangover helper, for those less well behaved among us.
Where to buy it
You can find coconut water in supermarkets, health shops and even news agents now.
Alexa has opted for VitaCoco, but there's also Harmless Harvest, Dr Antonio Martins Coco Juice and Go Coco to try too.
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