Shes far more well known than most 'celebritys' on shows. She is onthe voice with tom. Shes had many successfull singles including number ones over at least 5 years so shes not a here today gone tomorrow person. Most under 30s know her. Played a lot on radio 2 and sometimes on the One Show so maybe under 40s too. The celebs I never know are youtubers or influencers or love islanders that all under 30s would know. Maybe Jennyoan is more familiar with them celebs.
Anne-Marie is from the same camp as Zara Larsson, Rita Ora, Jess Glynne, and Becky Hill. They all work in the field of British EDM - electronic dance music - but Becky Hill has 'the voice'.
Anne-Marie had a huge single with Clean Bandit ('Rockabye') a couple of years back.