M&S's statement shell necklace will instantly make any summer outfit look more expensive - just £35

The easiest way to make your summer wardrobe look more expensive? Add a few great accessories. Something as small as a necklace can completely transform even the simplest outfit, which is especially handy when suitcase space is limited. This year, shell necklaces have caught the attention of the GH fashion team, and M&S has a statement take on the coastal trend, for just £35.

Though the mention of shell necklaces might transport you back to the 90s, rest assured that this season's styles are far more chic than your puka chokers. Think beachy charms, pared back cord ties and cascading layers.

M&S has become something of a treasure trove for chic, affordable accessories that can instantly make an outfit look more expensive. Their maximalist shell necklace features a chunky cord adorned with a mix of charms, including textured shells, chunky pearlescent designs and polished gold accents.

Tuck it into your suitcase and you'll find it works for just about any holiday occasion. Pair it with your favourite bikini and a breezy sarong for relaxing by the pool, or style it with a white vest top and linen shorts for exploring cobbled European streets. Come evening, it makes the perfect finishing touch to a simple maxi dress and strappy sandals for al fresco dining.

While the M&S design has already secured a place in my basket, there are plenty of other high street styles worth eyeing up. Next has kept things simple with a chic black cord and a glossy shell pendant, while Accessorize has also opted for a statement pendant in a shorter beaded design.

Meanwhile, Zara’s tiered shell necklaces come in a two-pack and make a real statement when layered together for a maximalist look, but they work just as well worn separately.

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