I'm a Celebrity host Ant McPartlin's little sister, Sarha Nigrelli, surprised Twitter users when the couple split back in 2018 after retweeting several messages criticising her famous brother's ex-wife, Lisa Armstrong.READ: Ant McPartlin's home has a very sentimental featureOne message, which Sarha shared on her own Twitter feed from a different account, calling Lisa a "bitter lady" and urged everyone to give "the poor lad a break".