Reese Witherspoon looked effortlessly chic in a black skirt suit as she posed up a storm with Michelle Keegan at her book launch on Saturday.

The Legally Blonde actress, 49, stepped out in a tailored blazer which featured padded shoulders.

Pictures posted to Instagram show how she paired her jacket with a modest black skirt, which she layered over a pair of black tights.

Adding inches to her frame, Reece slipped into a pair of black, pointed stilettos and accessorised with a pair of dangly earrings.

Meanwhile, Michelle, 38, wore a long-sleeved nude woollen jumper and a pair of matching flared trousers.

She completed her chic ensemble with a pair of towering black, pointed heels and a black belt.

Alongside her album of pictures, Michelle penned: 'When two geniuses collide.. ‘Gone Before Goodbye’ is made! (I can confirm Reese Witherspoon is everything you’d imagined her to be, what a woman)'

Gone Before Goodbye is Reese's latest book, which she co-authored with Harlan Coben and discussed at the event, and was part of The London Literature Festival at The Royal Festival Hall in London.

The novel sees an indomitable woman, trapped in a conspiracy she helped create but can’t understand.

She searches for the truth that could expose a conspiracy woven throughout the exclusive world of the global Über Elite–but at an unfathomable cost to Maggie herself.

The official description for the book reads: 'Maggie McCabe is teetering on the brink. A highly skilled and renowned Army combat surgeon, she has always lived life at the edge, where she could make the most impact. 

'And it was all going to plan…until it wasn’t.

'Upside down after a devastating series of tragedies leads to her medical license being revoked, Maggie has lost her purpose, but not her nerve or her passion.

'At her lowest point, she is thrown a lifeline by a former colleague, an elite plastic surgeon whose anonymous clientele demand the best care money can buy, as well as absolute discretion.

'Halfway across the globe, sequestered in the lap of luxury and cutting-edge technology, one of the world’s most mysterious men requires unconventional medical assistance.

'Desperate, and one of the few surgeons in the world skilled enough to take this job, Maggie enters his realm of unspeakable opulence and fulfils her end of the agreement.

'But when the patient suddenly disappears while still under her care, Maggie must become a fugitive herself—or she will be the next one who is.'

Last week, mum-of-one Michelle set pulses racing as she modelled pieces for the second iteration of her AW25 collaboration with Very, which she branded 'the most special collection I’ve created so far'.

She flaunted her sensational figure in a dazzling photoshoot showing off several looks in the range, which takes inspiration from Parisian glamour.

In the run-up to the festive season, the collection includes a range of festive partywear looks, with star dazzling in several sequin dresses. 

And for the first time ever, her collection introduces adorable mini-me styles, allowing mums and their children to cosy up together in matching PJ sets this Christmas.

The latest release includes 53 pieces in total and is exclusively available to shop online at Very's website.

Speaking about the collection, Michelle said: 'Inspired by the evenings of Paris, this collection is all about festive style with gorgeous detailing and finishes.

'It’s also the most special collection I’ve created so far, combining partywear with my cosy at-home loungewear and adorable children's PJ sets, it’s perfect for the festive season and all the special occasions.'