The curly-haired singer, 19, thrilled customers by spending a day serving them tasty treats at shop W Mandeville in his hometown of Holmes Chapel, Cheshire.
'It was funny as there were security and chauffeurs and minders outside, and there Harry was acting like he was still a baker's boy earning what he earns in a second now,' says a source.
'He posed for fans - he was just lovely.'
Harry - who's currently on a world tour with 1D - started his £6-per-hour Saturday job at the bakery when he was 14 and quit when he hit the big time on The X Factor two years later.
His former boss Simon Wakefield says the teen heartthrob was a 'hard worker' and the 'most polite' member of staff he'd ever hired.
'Customers really took a shine to him. The shop suddenly had an influx of girls when Harry worked here,' Simon tells the Daily Mirror.
'Someones there would be 12 of them pouring in at one time. Even now, a group of 20 girls will sometimes come in and start taking photos of the shop.'
source: nowmagazine.co.uk
