Blake Lively has been basted after eagle-eyed trolls noticed she suffered an unfortunate wardrobe malfunction on the red carpet for the New York premiere of Another Simple Favor.

The Gossip Girl alum, 37, had all eyes on her as she posed for photos alongside costar Anna Kendrick amid a rumored fall out, as they celebrated the movie’s upcoming release at Jazz at Lincoln Center on Sunday afternoon.

Wearing a Cinderella blue cleavage-accentuating gown with crisscross cutouts, Blake accessorized the floor-length ensemble with a pair of statement earrings and several sparkly pink bracelets from Lorraine Schwartz.

For the occasion, the actress wore her long blonde hair in romantic waves, nude lip gloss and a glamorous makeup look.

While Blake looked sensational, online sleuths spotted that her body makeup had awkwardly rubbed onto her dress and had left brown marks underneath her armpits.

Of course, they wasted no time in cruelly pointing out her outfit mishap on social media with one going as far as saying that they ‘can’t unsee it.’

Taking to Instagram, one said, ‘The body makeup on the side of the corset’ alongside a shocked emoji.

Replying to the comment, another wrote: ‘The gasp I GUSPED.’

+9
View gallery

Blake Lively has been basted after trolls noticed she suffered a wardrobe malfunction at the New York premiere of Another Simple Favor

+9
View gallery

Online sleuths spotted that her body makeup had awkwardly rubbed onto her dress and had left brown marks underneath her armpits

‘Unfortunate armpit spray tan on the dress,’ wrote a third.

‘Oh no!! Can’t unsee it!!’ replied a fourth said.

A fifth added: ‘The self-tanner pit stains on Blake’s dress are a nice touch.’

‘Anyone notice the dirt on her dress on the left?’ another put, along with laughing emojis.

On the red carpet, Blake cozied up to her co-star Anna, 39, as they attempted to brush off rumors of an ongoing feud.

The women even held hands at one point and flashed their megawatt smiles as they promoted the A Simple Favor sequel, which comes out on Prime Video May 1.

Pitch Perfect star Anna showed off her toned midriff in a cropped white top and matching high-waisted trousers.

It comes amid speculation of a clash and Blake’s ongoing legal battle against It Ends With Us co-star and director Justin Baldoni.

+9
View gallery

Eagle-eyed trolls noticed the ‘unfortunate armpit spray tan on the dress’ in photos shared online of Blake posing (pictured with her husband Ryan Reynolds)

+9
View gallery

The marks were visible as Blake stood on the carpet with her costar Anna Kendrick amid speculation of a rift

Fans initially suspected that there was bad blood among the actresses earlier this year.

One point of contention was said to be over billing for their forthcoming movie, while it’s also been claimed that Anna is upset Blake’s legal ordeal with Justin has overshadowed the new film.

Concerns were further stoked when Anna and Blake appeared at SXSW in Texas in March.

When asked in a video shared by ET what it means to be working with Blake again, Anna replied elusively while signing autographs, answering, ‘Oh, you know…’

A source had previously told E! News, ‘There is no drama. They are not enemies. They are coworkers, friends and get along well.’

+9
View gallery

+9
View gallery

The wardrobe malfunction didn’t go unnoticed by social media users

+9
View gallery

Blake wore a Cinderella blue cleavage-accentuating gown with crisscross cutouts

+9
View gallery

She accessorized the floor-length ensemble with a pair of statement earrings and several sparkly pink bracelets from Lorraine Schwartz

Blake was also joined by her husband Ryan, 48, at Sunday’s premiere.

He appeared every inch the doting spouse as he stood by her side on the red carpet in a grey suit and brown loafers.

They shared loving gazes at one another and looked picture perfect as Blake rested her hand on his torso and he the small of her back.

Blake and Anna have returned to their roles of Emily Nelson and Stephanie Smothers respectively for their anticipated film Another Simple Favor, the sequel to their 2018 film A Simple Favor.

The film follows Stephanie Smothers (Kendrick) and Emily Nelson (Lively) as they head to the beautiful island of Capri, Italy, for Emily’s extravagant wedding to a rich Italian businessman.