Those who keep up with Kate Middleton's fashion choices will know the best dressed royal loves to mix her more expensive designer pieces with budget-friendly buys. One of the Princess of Wales' favourite brands is Whistles, which she has worn since at least 2010, where she chose a Whistles blouse for her engagement photos with Prince William.

Luckily for fans of Kate, Whistles is currently running a massive sale with deals of over 60% on some pieces, and we've spotted a dress that would make the perfect wedding guest dress this spring and summer. The dress in question is the Dandelion Floral Midi Dress, which has received a massive £100 discount.

Typically retailing for £159, shoppers can pick up the Dandelion Floral Midi Dress for just £59. It comes in two colourways, a beautiful black and white in a summery pink and purple, that would brighten any room.

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The responsibly crafted dress has been cut from a soft and light blend fabric with a chic floral print. The effortless number has been cut to a midi length, which is suitable for both formal and casual occasions. Plus, it features a frill detail and the neck and a button fastening for easy wearing.

The best thing about the dress that it can be worn from day to night. During the daytime, why not style with a pair of comfy sandals and then switch them out for a pair of heels or wedges with some high-shine jewellery for an evening setting.

At Whistles, the Dandelion Floral Midi Dress has racked up an impressive 4.5 average star-review out of five. One shopper said: "Flattering dress in lovely material, I’m looking forward to wearing it when the weather gets warmer. I usually have a size 12 when buying from Whistles but this style I needed a 10."

A second wrote: "Beautiful dress, well made and fits elegantly. Love the colour too." A third penned: "Colour is gorgeous. The dress is a feminine shape." "True to size," mentioned another. "Colour is advertised. "Lovely dress, feels lovely," added a countless other happy Whistles shopper.

The Dandelion Floral Midi Dress is just £59 down from £159 at Whistles
The Dandelion Floral Midi Dress is just £59 down from £159 at Whistles

However one person gave the Dandelion Floral Midi Dress a two-and-a-half stars because the dress 'didn't look right' on them. They wrote: "Didn’t look right when tried on." But another person loved their Whistles purchase, adding: "Lovely dress, very pleased with my purchase." "Well made and nice material," said another.

Elsewhere, River Island is selling a similar dress in the form of the Black Abstract Shirred Swing Midi Dress, which costs £45. Or at New Look, the Black Abstract Print V Neck Belted Midi Dress comes in at £25.