WHILE Bridgerton’s Phoebe Dynevor has grabbed the nation’s attention with those plunging necklines, her impeccable eyebrows have also got fans swooning.

It’s all because the 25-year-old has nailed the “power of three” formula.
Inspired by the Ancient Greeks’ “golden ratio” which says the ideal face has 3:2:3 proportions, from forehead to chin, this brow blueprint is used by beauticians.

Use the ‘power of three’ formula to identify the perfect brow shape to flatter your featuresCredit: Shutterstock

It involves drawing three dots to map out the best brow line for one’s face.

Benefit’s head brow artist Laurretta Power, says: “We use this method to help identify the perfect shape.” Follow Laurretta’s guide, below, to achieving the ideal ratio for YOUR looks.

Meanwhile, Vanita Parti, founder of Blink Brow Bar, London, explains the secrets of our famous faces.

Three-point formula by Benefit’s Laurretta Power

Beautician’s secret ‘power of three’ formula will guarantee perfect eyebrows every time

YOU will need: Ruler, brow pencil, clear gel and tweezers

Step one: First take your ruler, line it up with the dimple of your nose, (this would be where you might have a piercing) and the inner corner of the eye. Mark a dot with brow pencil. This is where the brow should start, lining up with the bridge of the nose.

Step two: Hold the ruler diagonally from the nose dimple through the pupil of the eye when looking straight ahead, mark another dot with pencil. This is where the brows should arch.

Step three: Line up your ruler from the bottom tip of your nose diagonally past the corner of the eye. This is where the brow should finish – so mark with a dot. With your key points marked, draw a line from inner to outer along the bottom line of the brow. Go over with a clear brow gel to set in place – this will help find any strays that need plucking.

This natural, androgynous style matches Phoebe’s feminine face

VANITA says: “The soft, straight line is in perfect proportion to Phoebe’s pointed features and the brushed-up ‘boy brow’ enhances the angular shape.

“This is an androgynous style that matches Phoebe’s feminine face.”

Create subtle shape with a sculpting brow pencil – Rimmel’s is 2 in 1

Rimmel London Brow This Way pencil, £5, Boots – buy now

Vanita says Adele has the perfect pair of brows as they don’t dramatically thin out at any point

VANITA says: “Adele’s eyebrows are the perfect width all the way.

“Their thickness follows the golden rule and they do not dramatically thin out at any point. The singer has a perfect pair.”

Fill in the gaps with Anastasia Beverly Hills’ pomade

Anastasia Beverly Hills pomade, £19, beautybay.com – buy now

Brooke was a trendsetter when it came to brows in the Eighties

VANITA says: “Brooke Shields was a trendsetter when it came to brows, in the Eighties.

“The shape is in perfect alignment to the US actress’s face, lining up for the start, arch and end. They are a focal point on her face.”

Blessed with full brows like Brooke? Bring unruly hairs into line with a tamer

Tamer, £14, bbb-london.com – buy now

The gentle rise in Angelina’s brows blanace her structured cheekbones and chin

VANITA says: “Angelina Jolie has a flatter, more boyish shape.

“Her brows start in the right place and gently rise in the middle with the perfect length to balance the Hollywood A-lister’s structured cheekbones and chin.”

Angelina’s brows were much thinner in the Nineties – rescue over-plucked brows with a serum

Bare Minerals tinted serum, £18, John Lewis – buy now

Di’s subtle arch enhanced a lift in her features and framed her face

VANITA says: “Her overall attractiveness scores high using the Ancient Greeks’ golden ratio – and her brows don’t disappoint either.

“Starting in the right place, the point of her subtle arch enhanced a lift in her features and framed her face. Perfect shade and depth, too.”

Try shading with Revlon Brow Fantasy Pencil

Revlon Brow Fantasy Pencil, £6.39, Boots – buy now

Vanita says Keira’s full brows would suit anyone with a heart-shaped face

VANITA says: “Keira Knightley probably has the most perfect eyebrows of all.

“The actress has kept the brows full, with an arch in the right place to give a dramatic lift. The ideal shape for her heart-shaped face.”

Get bushy brows sitting pretty with a clear gel like Benefit’s

Benefit clear gel mini, £12, lookfantastic.com – buy now

Dua’s eyebrows are thick but still follow the formula with a slight arch

VANITA says: “Singer Dua Lipa’s eyebrows have maintained thickness but follow the winning formula.

“While the shape is straighter than some, the slight arch is still spot on, peeking above the outside of the iris. She hasn’t over-plucked in school either.”

If your brows are relatively untouched, all you need is this eyebrow kit

Eyebrow kit, £4.50, elfcosmetics.co.uk – buy now

Leigh-Anne’s full, sculpted look could rival Cara Delevingne’s

VANITA says: “Little Mix star Leigh-Anne Pinnock follows the golden ratio perfectly, starting in line with her nose and ending at the corner of her eyes – with a strong arch sitting diagonally across.

“The singer’s fullness could rival Cara Delevingne’s too.”

Get pop star-worthy brows like Leigh-Anne’s with Morphe’s brow kit

Morphe Arch Obsessions brow kit, £20, cultbeauty.co.uk – buy now

For balanced brow inspiration look to Anita

VANITA says: “TV host Anita Rani is a good example of balanced brows. The arch divides the front end from the back end equally, while the thickness gradually diminishes.

“A longer tail would make them truly perfect but this can be easily achieved with products.”