And even though the 'Once' singer is only a mere 22 years old, we're still a tad jealous of her flawless complexion.
Diana, who reached the semi-finals of The X Factor in 2008, posted this snap on Instagram this week (31 March) as she relaxed while hanging out with her gorgeous cat, Kiki.
With what looks like not a scrap of slap on, Diana can rest assured that her previous days of bad skin are well and truly over.
"I suffered badly from acne when I was younger," Diana has admitted in past magazine interviews, but now reckons classic beauty tricks like a decent night's sleep and drinking plenty of water are up there as some of her favourite skincare must-dos.
When it comes to favourite products, Diana cleanses her skin and removes all scraps of make-up extra carefully with her favourite Eve Lom Cleanser, from £40, uk.spacenk.com.
We're also big fans of Eve Lom Cleanser in the Reveal office but it 'aint half pricey, so here are a few alternative hot cloth cleansers we know you'll love just as much...
1. Sanctuary Spa Polishing Hot Cloth Cleanser, £10.50, boots.com.
This beauty is perfect for boosting tired, flagging skin.
2. Liz Earle Cleanse & Polish, from £14.75, uk.lizearle.com.
Oozing with naturally active ingredients, it's a winner with beauty editors up and down the country.
3. Soap & Glory The Ultimelt Deep Purifying Hot Cloth Cleanser, £10, boots.com.
A great one if you fancy a really intense, deep clean.
What's your skincare secret? Let us know below. Our fave comment across the site each week wins £50!
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