"Blake Lively Expresses Regret Over Instagram Mocking of Kate Middleton Following Cancer Revelation"

Blake Lively deleted an Instagram post mocking Kate Middleton's absence from the public eye following her cancer diagnosis and photoshop incident, expressing mortification and apologizing for her insensitivity. The post, promoting her canned seltzer brand, referenced conspiracy theories about Middleton's whereabouts and lack of public appearances, drawing criticism in light of Middleton's health revelation. Lively's apology came after Middleton's announcement, with other celebrities like Kim Kardashian also facing backlash for making light of the situation.