Queen of Baking Mary Berry has opened up on how she’s maintained her enviably slim figure for 90 years - and the reason is devastating Dame Mary, still looking sprightly at the age of 90. Has spoken about her weight and how she feels about weight-loss jabs which are currently all the rage. The former Great British Bake Off 's host, whose successor Pru Leith revealed on Wednesday she was quitting the show , opened up about the tragic reason why she’s stayed so slim over the years. The TV legend