Lily Allen last night made a surprise guest appearance during Professor Green’s support slot at Stone Roses’ second Heaton Park show.

The 27-year-old, who announced her retirement from the music scene two years ago, joined the Hackney rapper on stage for a rendition of their 2010 hit, ‘Just Be Good To Green,’ in front of the packed 75,000 crowd.

The ‘LDN’ star, who last week revealed she was working in the studio with producer Greg Kurstin, had hinted at her return in a tweet posted before the gig:

“Right, so what was the ground like at Heaton park, do I need Wellies ?”

After the show, she then took to the same social networking site to joke about her first live outing in two years:

“No @professorgreen wasnt swinging a cat around on stage @HEATON PARK that was me trying to sing. loved it , thanks manchester x x x"