1 Ask for opinions
“I’ve improved my style by listening to those around me, including my stylist, Angie, and mum, who is 70 and dresses well. Listening to other people’s opinions helps push you out of your comfort zone, and you may find clothes you actually prefer to your normal look.”

2 Don’t write off certain styles
“Until two years ago, I never wore trousers – I was a dress and pencil skirt girl. Sometimes you get stuck in a rut where you feel safe, and I thought I was the wrong shape for trousers. It changed everything when I tried on a high-waisted pair. It’s all about experimenting and finding the right fit for you.”

3 Embrace separates
“A white silk shirt goes with anything – if you can’t decide what to wear, it’s a definite banker. If you’re not sure what to team with a bright, patterned skirt, pick out one of the tones in the print and wear a plain knit in that shade. Another option is to wear simple, muted separates and then stronger-toned accessories, like a mustard bag.”

4 Consider your lifestyle
“I hate the idea of wearing a pair of low-rise jeans with your bottom hanging out in the park! No one needs to see that on the school run. I’m definitely a high-rise, skinny jeans kind of person.”

5 Balance soft and edgy pieces
“I love a baby-pink cashmere jumper with a leather or PVC skirt, or a pair of black boots – it hardens up the girly-girly side, making it edgier.”

6 Get the essentials right
“For example, a winter coat – it’s an investment piece, so you don’t want to realise you can’t wear it with anything. I like a classic Crombie-style coat, which looks great with trousers or dresses. As for winter boots, a good fit round the ankle is important – no one likes a baggy ankle! The M&S sock boots are great for any leg shape.”

Shop Holly’s M&S Must-Haves from 27 September