The singer-songwriter on an embarrassing water-slide mishap, changing her son’s name, and Chloë Grace Moretz’s matchmaking skills

Born in Massachusetts, Meghan Trainor, 30, released albums as a teenager. She had a diamond-certified hit with her 2014 song All About the Bass and won the best new artist Grammy in 2016. She has had eight multi-platinum singles, two multi-platinum albums, sold out three world tours and written hits for artists including Jennifer Lopez and Little Mix. Her new album is called Timeless and she performs at Wembley’s Capital FM Summertime Ball on 16 June. She has two sons with actor Daryl Sabara and lives in Los Angeles.

When were you happiest?
Whenever I’m with my kids.