14. Samantha Grant
Agreed that Meghan’s half-sister Samantha Grant isn’t really a celebrity but she is one of the most vocal people on her not so good opinions about Meghan Markle. Samantha publicly labeled her sister as a social climber and claimed that she was never there for her. Later, she publicly bashed the princess again for not inviting her to the wedding. Given that the two sisters grew up in different households and always led separate lives, we are positive that Samantha is just looking for attention.