In a heartfelt message shared on her Instagram account, actor and entrepreneur Blake Lively expressed her deep regret over a previous joke she made about Kate Middleton's "Photoshop fails." Lively's apology comes after the Princess of Wales confirmed on Friday that she has undergone treatment for cancer.

Lively acknowledged that her previous post, in which she comically edited a photo to promote her Betty Buzz beverage line, now fills her with immense mortification. The since-deleted Instagram post showed Lively sitting poolside with an enlarged thumb and a floating lemon above her head, captioned, "I'm so excited to share this new photo I just took today to announce our 4 new @bettybuzz & @bettybooze products! Now you know why I've been MIA."

Her post alluded to the visual anomalies present in a photo released by the Royal Family on March 10, featuring Middleton and her three children. The photo had garnered attention due to perceived Photoshop alterations, leading to its removal from news agencies services, including AP.

Middleton later addressed the controversy, admitting to occasionally experimenting with editing, as many amateur photographers do. The speculation surrounding the photo's anomalies led to theories about Middleton's well-being and her prolonged absence from public appearances.

Various celebrities, including Jimmy Kimmel and Jamie Lee Curtis, called on the public to respect Middleton's privacy amidst the speculation. However, amidst the ongoing discussions, Middleton released a video statement on Friday, revealing that her cancer diagnosis was discovered during abdominal surgery. She mentioned that she is currently in the early stages of preventative chemotherapy and expressed her gratitude towards her excellent medical team.

Lively's apology post followed Middleton's announcement, with the actor feeling compelled to acknowledge her previous joke considering the circumstances. She expressed remorse, sending love and well wishes to all.

It serves as a reminder that jokes and remarks, while intended to be lighthearted, can sometimes have unintended consequences. Lively's sincere apology highlights the importance of being mindful and empathetic, especially when sensitive topics like health are involved.