Female staff of the bakery protect their modesty with cakes and biscuits in the risqué images.
The ladies shed their bakers' uniforms for a charity calendar that is now on sale at all of the 1,650 Greggs shops across the UK.
Priced at £5, it has reportedly been flying off the shelves and is on course to raise more than £100,000 for the BBC Children in Need appeal.
The idea for the calendar came from Kelly Gilmour, 32, an assistant manager at the shop in Gateshead, Tyneside where all the women featured work.
Gilmour, who appears as Miss June with a pile of doughnuts and a can of whipped cream, said: "Customers may look at their Belgian buns in a different way now.
"We were really nervous about doing the pictures but a couple of glasses of wine helped. Then it was good fun."