With the sun finally deciding to make a proper appearance now that spring is here, it's probably time to invest in a nice pair of sunglasses.

And no sunglasses brand epitomises summer cool like a classic pair of Ray-Bans.

The brand is the go-to make for celebs like Kate Moss, Beyonce - and even our very own royal fashionista, Kate Middleton.

But despite the universal appeal some shoppers are put off by the hefty price tag, which is why it is worth doing your homework on how you can snap up a good deal on the coveted fashion accessory. As well as some tips on how to not get ripped off.

Copy Kate's cool off-duty supermodel look in a pair of classic Wayfarers

Best places to buy Ray-Bans

Here is our round up of some of the best places to buy some cheap Ray-Ban sunglasses online or on the high street.

1. Amazon

The sheer volume of stockists featured on the Amazon means you're guaranteed to find competitive prices for a wide range of Ray-Ban styles, including the popular Wayfarer and Aviator styles.

2. The Outnet

The online designer discount retailer features up to 40% off current and older seasons Ray-Ban styles.

3. Sunglasses Shop

As a certified Ray-Ban dealer the sunglasses specialists is a safe bet for shoppers scared of being scammed.

There's a wide range of styles at good prices and the Sunglasses Shop also offers free delivery and returns too.

4. Secret Sales

Sign up to Secret Sales and get access to daily designer sales and dicsounts.

The site has previously featured flash sales of up to 40% off Ray-Ban styles.

5. Costco

Bear with us on this one... While it isn't an obvious choice, if you can find someone with a Costco card, it is worth heading to the wholesale cash and carry and checking out their Ray-Ban sunglasses ranges.

They are often sold at a discount to the official RRP year-round.

It's also worth noting that major brands like House of Fraser, ASOS and John Lewis also stock Ray-Bans and often include them in seasonal sales and discounts throughout the year.

How to tell the real from the fake

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Get the popular Wayfarer style sunglasses for cheap

These distinctive hallmarks will ensure you can spot an authentic pair of Ray-Bans and unearth any dodgy fakes.

  1. Look for the RB and model number etched onto the left temple arm

  2. Check the quality of the material - if it feels or looks cheap, shows any signs of rough spots or imperfections there's a high chance their aren't the real deal.

  3. Are the lenses glass. Gently tap on the lens to check as real Ray-Bans are always made with glass rather than plastic.

  4. Check nose pad by looking for tiny RB etched into the metal centre.

  5. Look at the packaging - the real deal comes in a leather pouch which shouldhave a Ray-Ban logo on the fastening, a big logo on the front, booklet and cleaning cloth.

Check out our gallery below of some of the world's most famous Ray-Ban wearers