Milly Alcock has raised questions about her future as Supergirl after reportedly removing numerous posts about the DC character from Instagram, including the original casting announcement in which she thanked James Gunn for trusting her with the role. The unexpected social media cleanup has caught fans' attention, particularly as it comes months after her solo film struggled at the box office and ahead of her expected return in the upcoming Superman sequel, Man of Tomorrow.
The actress has not publicly explained the deletions, leaving fans to speculate about what prompted the changes. However, the move does not confirm that she is leaving the DC Universe, and some Supergirl-related content reportedly remains on her profile.
The Casting Announcement Disappears
One of the most notable deletions was Alcock's January 2024 announcement confirming her casting as Kara Zor-El. The actress had expressed her excitement about joining the DC family and thanked Gunn for trusting her with the iconic superhero role.
'So excited to be a part of the DC fam, thank you so much to @jamesgunn for trusting me with Kara / Supergirl,' she wrote in the now-deleted post. The announcement had reportedly attracted more than 82,000 likes, making its disappearance particularly noticeable to followers who remembered the moment she was introduced as the new Supergirl.
Her Supergirl Photos Are Gone
The reported cleanup extended beyond the casting announcement, with a photograph of Alcock holding the Supergirl: Woman of Tomorrow comic also disappearing from her Instagram grid. Images featuring the actress in her Supergirl costume were reportedly no longer visible among her main profile posts.
Milly Alcock has deleted all the posts related to Supergirl including her announcement one 🙃 pic.twitter.com/FCHoI2lgOW
— Everything_DCU (@EverythingDCU_) October 15, 2026
However, the changes do not appear to represent a complete removal of every reference to the character. Some Supergirl videos reportedly remain in her Reels tab, alongside a Vogue cover post dated 29 May that was associated with the film's promotional campaign.
The remaining content makes it difficult to conclude that Alcock is deliberately cutting ties with the character. She has not publicly addressed the changes or offered an explanation for the missing posts.
Fans Question The Sudden Change
The deletions quickly attracted attention on social media, with users questioning why the actress had removed content connected to one of her biggest career roles. One fan reportedly commented, 'Why did you deleted you post of Supergirl 😢,' expressing confusion over the missing announcement.
Other commenters offered less dramatic interpretations, suggesting that the posts could have been part of a promotional campaign with contractual posting periods. Some also claimed Alcock had previously removed content associated with House of the Dragon, although that comparison has not been independently established here.
This is normal for paid promos. They have dates where you are contractually obligated to keep a post up until and then you can take it down. A big nothingburger.
— Ryan (@RCAM_Media) October 15, 2026
Another commenter argued that speculation surrounding the cleanup could unfairly attract more hostility towards the actress, pointing out that some Supergirl content remained available. These reactions reflect individual opinions online rather than evidence of Alcock's intentions.
posts like this only bring more hate to milly and mean absolutely nothing. she’s still kara, and her profile still has plenty of posts related to supergirl. pic.twitter.com/YbN6VmctTU
— acervo supergirl (@acervsupergirl) October 15, 2026
Supergirl Struggled At The Box Office
The timing has added another layer of intrigue because Alcock's solo Supergirl film reportedly earned approximately $126.4 million (£94.5 million) worldwide after opening in cinemas on 26 June 2026 and leaving theatres around 40 days later. Against an estimated production budget of $180 million (£134.6 million), the theatrical result fell well short of the performance the studio would have hoped for.
The film's commercial difficulties have fuelled wider discussion about its place in the new DC Universe. However, its theatrical performance alone does not establish a connection to Alcock's Instagram decisions, and there is no verified evidence that the actress removed the posts because of the film's reception.
The movie has also reportedly attracted renewed attention through streaming, suggesting that its audience may extend beyond its disappointing cinema run. Its longer-term reputation will depend on more than its original box-office figures.
Firing Rumours Remain Unconfirmed
The Instagram changes have also coincided with online rumours suggesting Alcock could have been fired from the Supergirl role. No confirmed announcement supplied here establishes that she has lost the part, and the deleted posts should not be treated as proof of a casting change.
Speculation about the marketing campaign for Man of Tomorrow has added to the uncertainty, with an unconfirmed claim suggesting Supergirl may receive limited visibility in promotional material. Neither that rumour nor the Instagram cleanup confirms a change to Alcock's involvement in the sequel.
Man Of Tomorrow Still Awaits
Alcock is expected to reprise her role as Kara Zor-El in Man of Tomorrow, the upcoming Superman sequel directed by Gunn and scheduled for release on 9 July 2027. Her reported return makes the disappearance of the earlier casting announcement more intriguing, but it does not necessarily indicate a change in her professional relationship with DC Studios.
For now, the reason behind the deleted posts remains unknown. Until Alcock or DC Studios provides further information, claims that she is abandoning Supergirl or has been fired remain speculation, leaving fans to wait for a clearer picture of her future in the franchise.
