Mums night out! Beatrice and Eugenie glam up to attend a restaurant opening in Mayfair
- The royal sisters turned heads at the posh event on London's Park Lane
- READ MORE: Beatrice and Eugenie don bold headwear at Easter Sunday service
Princesses Beatrice and Eugenie turned heads as they stepped out for an event in London last night.
The King's nieces sported all black for the launch of MR PORTER Steakhouse, a new eatery situated on London's affluent Park Lane.
Princess Beatrice, 36, stunned in a casual chic ensemble consisting of a black blazer, a black a line dress and a pair of flat black Mary Jane pointed pumps.
The stylish mother-of-two and stepmother to husband Edoardo Mapelli Mozzi's son from a previous relationship opted to leave the blazer open, which showcased a row of decorative gold buttons.
She accessorised the look with a tan leather clutch bag featuring both a top handle and an adjustable strap. Meanwhile her only jewellery of choice for the occasion was a pair of miniature stone encrusted hoops.
The royal's famous auburn hair was styled with loose curls and a middle part, and fell loosely around her shoulders.
Meanwhile her younger sister, Princess Eugenie, 35, looked equally chic in monochrome, albeit her look depicted a more laid back fit.
For the engagement, the fashionista, who shares two children with husband Jack Brooksbank, donned a black wool jumper, a black maxi satin skirt and a pair of chunky-heeled leather boots.

Princess Beatrice, 36, stunned in all black for the launch of MR PORTER Steakhouse in London last night

Princess Eugenie, 35, looked equally chic in monochrome, albeit her look depicted a more laid back fit
Eugenie teamed the look with a large black leather tote bag, a gold necklace and a pair of stone encrusted hoops - almost identical to those of her sister, with the items differing only in size.
The royal's nude wool coat made for the perfect dash of glamour, while its addition completed a striking colour palette also worn by that of her sister, Prince Beatrice.
The sisters appeared to have planned their looks, as they both sported all black with just a touch of nude.
And if they didn't plan to coordinate their fits, perhaps the coincidence can be put down to uncanny sister's intuition.
Eugenie and Beatrice appeared to be in high spirits as they smiled for the cameras before making their way into the establishment.
Prince Andrew's daughters were among a list of celebrities who attended the lavish grand opening of the MR PORTER Steakhouse.
Formerly the location of the popular Trader Vic, the steakhouse describes itself as 'extravagant yet modest', and a restaurant that 'fearlessly explores the borders between dinner and sinner'.
Guests can expect to dine on premium steaks, lobster, chips and 'perfectly poured' cocktails.

MR PORTER Steakhouse is a new eatery situated on London's affluent Park Lane

The princess looked stylish in a black blazer, a black a line dress and a pair of flat black Mary Jane pointed pumps
Princesses Beatrice and Eugenie are no strangers to donning their fashionable best, as they did for the Royal Family's traditional Easter Sunday service in Windsor last week.
Princess Beatrice was seen making a striking fashion statement in a stylish gold patterned headband as she chatted with her husband Edoardo Mapelli Mozzi in the grounds of St George's Chapel ahead of the seasonal service.
The princess looked stunning in the gold and black headpiece, which kept her famous auburn hair neatly pinned back for the religious service.
It also featured a black-coloured bow which was fixed towards the back of the accessory, and made for a stylish touch.
The princess teamed the striking headgear with a form-fitting forest green midi dress that cinched at the waist courtesy of a wide-set belt.
The dress was contrasted by a block of white pearl buttons placed across its front and along its sleeves.

The royal turned heads in a black wool jumper, a black maxi satin skirt and a pair of chunky-heeled leather boots
And the royal accessorised the look with a pair of green satin Mary Jane heels and a dark blue clutch bag with a decorative jewelled handle.
She was pictured arriving at the Easter service hand in hand with her husband Edoardo, 41, who donned a suave blue linen suit and yellow tie.
Meanwhile her younger sister, Princess Eugenie, looked elegant in all white and a matching veiled headpiece.
Eugenie also opted for a bold choice for the engagement as the elaborate headgear, whose veil covered a large portion of her face, was sure to capture attention at the service.
The royal fashionista completed the ensemble with a white longline belted coat, nude suede pointed pumps and a nude tote bag.
She appeared to be in high spirits as she smiled and chatted away with her husband Jack Brooksbank, 38, and her mother Sarah, Duchess of York.
At one point before the service she was spotted entering the grounds with her uncle, Prince Edward, along with his wife, Sophie, Duchess of Edinburgh, and their 17-year-old son, James, Earl of Wessex.
The sisters looked delighted as they were captured in various photographs with their family members.
The presence of their father, Prince Andrew, at the service also turned heads. He attended the Easter service alongside King Charles, Queen Camilla and other members of the royal family.