Leicester Square was transformed into a landmark fit for a Hollywood queen on Thursday evening as Blake Lively celebrated the release of new film It Ends With Us in central London. 

The American actress has taken on a whirlwind promotional missive on behalf of the movie, a romantic-drama based on the 2016 novel by Colleen Hoover. 

And with London her latest pitstop, Lively, 36, pulled out all the stops ahead of the film's UK premiere at Odeon Luxe after a day of back-to-back interviews - and an ever-revolving wardrobe of couture outfits. 

The actress looked stunning in another elegant floral gown - a recurring theme during her current promotional tour and her fifth outfit of the day - while greeting onlookers at the event. 

The tasteful fitted floor-length Tamara Ralph dress, worth £30,000, featured distinctive Bardot detailing and a plunging front that partially exposed her cleavage. 

The dress was adorned with crystal mesh petals, featuring a crystal orchid and cherry blossom neckline. 

The look featured is from the designer's latest Autumn-Winter 2024/2025 couture collection, presented earlier this summer in Paris during Haute Couture fashion week. 

The actress completed her look with a striking scarlet feather shawl, while glittering silver heels were visible beneath her floor-length hemline as she made her way across the white carpet. 

This Ends With Us centres on Lively's Lily, a flower shop owner who finds herself in the middle of a complicated love triangle between hunky neurosurgeon Ryle - Justin Baldoni, who also directs - and her hunky high school sweetheart, Atlas, played with hangdog cuteness by Brandon Sklenar. 

But when Ryle's violent outburst leads her to fear he may be an abusive partner, she turns to Atlas for help after they reconnect when she runs into him at a restaurant he works at.

The film is based on the best-selling romance novel of the same name by Colleen Hoover, which was a hit with readers after it was published in 2016.

After being pushed back multiple times, the film's release date was set for August 9 of this year.

Lively posed for a photo with Isabela Ferrer at the screening. 

The actress, 24, who plays a younger version of Lily in the film, commanded attention in a backless halterneck dress which had a floral corsage. 

The Hollywood starlet also showed off her generous side as she gifted one 14-year-old fan the red coat she had been wearing. 

The fan, named Paola, was overcome with emotion as she was handed the gift before her family joined them for a photo. 

A host of reality stars also attended the screening. 

Former Made In Chelsea star Kimberley Garner, 33, put on a daring display in a cut out gown which showed off her toned abs for the event. 

The swimwear designer appeared in her element as she posed up a storm for the camera. 

Ekin-Su Culculoglu, 29, flashed her toned legs in a stylish thigh-slit green dress.

The chic ensemble boasted a high neckline, a daring split at the leg, and a criss-cross backless design. 

The TV personality added inches to her frame with a pair of white stiletto heels and toted her essentials around in a mini Chanel handbag to match. 

Ekin-Su styled her dark tresses in loose waves for the carpet event and wore a flawless palette of makeup. 

Fellow Love Island alumni Gabby Allen and Arabella Chi, meanwhile showed off plenty of cleavage in their outfits. 

Gabby, 32, went braless in a plunging red gown which also had a daring thigh-high slit. 

Arabella, 33, also opted to go braless in a white dress with sheer panelling on the waist and bust. 

Strictly professional dancer Nadiya Bychkova took time away from rehearsals to attend the premiere. The newly-single television personality, 34, looked stunning in a pale pink silk halterneck gown. 

Abbie Quinnen opted for a champagne gold gown for the occasion and complemented her premiere look with gold jewellery. 

Former Love Islanders Alex and Olivia Bowen were also at the event. Olivia, 30, looked sensational in a coral maxi dress, paired with eccentric green heels.

Andrea McLean, 54, got into Lively's floral theme with her maxi dress as did Dancing On Ice skater Vanessa Bauer. 

Hollywood star Lively wore five floral outfits yesterday during the press tour for her new film, It Ends With Us, a romance drama in which she plays florist Lily Bloom.

She started the day in an oversized white suit at the London photocall. The Stella McCartney outfit, worn without a top, was embroidered with green vines. But she quickly nipped that in the bud after nearly suffering an embarrassing wardrobe malfunction.

Just over an hour later, she changed into a £14,000 floral jacket, £2,000 skirt and £400 lace tights from Chanel as she arrived at the BBC studios. 

From there it was on to the Capital FM studio in a Burberry trench coat, thought to be priced at more than £3,000, featuring cut-out flowers. 

Ninety minutes later, she suited up again – this time in a £5,370 rose-printed blazer and check trousers from Thom Browne.

At last, for the grand finale in Leicester Square, Lively chose an equally grand design. Arriving at the premiere, she wore a £30,000 jewelled floral gown from designer Tamara Ralph with a scarlet feather shawl and matching lipstick.

The mother of four was not joined by her actor husband Ryan Reynolds, 47, for the latest leg of her press tour.

But the actress, who starred in hit TV series Gossip Girl, did reveal the romantic gesture he used to woo her.

She told People magazine ‘When we first got together, he would send me a bouquet of flowers every week but he would always send a card and it would just be a sentence of something that had happened that week. Something funny or emotional that one of us said. It was such a romantic thing.’

It Ends With Us, is in cinemas from August 9.