CMAT shares 'deep sadness' over body-shaming abuse after Radio 1 Big Weekend set 33 minutes ago Naomi de Souza BBC Newsbeat Getty Images CMAT performed right before Olivia Dean at Radio 1's Big Weekend festival in Sunderland Singer-songwriter CMAT has shared her "deep sadness" about body-shaming abuse she received after her performance at Radio 1's Big Weekend. The Irish musician says she has experienced a "difficult" few days after performing at the music festival in Sunderland because of online comments about her weight. CMAT says she is "not choosing to look like this or weigh this much as some kind of punk rock act of liberty" but that she simply has "a body". CMAT, whose real name is Ciara Mary-Alice Thompson, performed on the main stage of Big Weekend on Sunday evening, before headliner Olivia Dean. She opened up about the latest body-shaming abuse in an Instagram post on Thursday, saying she felt she needed to "wade in and speak for myself".…