The Hairspray actress was first reported to be working at Superstar Hairstylists in Great Neck, New York on Monday by Radar Online, who published a photo of Blonsky sweeping floors at the establishment.
"I was in the salon having my hair done and I saw her working there. I couldn't believe it. She was sweeping up hair but also doing people's make up," said customer Sally Miles.
"She was really nice and even let me take pictures of her. I asked her if she was still acting and she said that she is auditioning a lot. But she needs a day job too."
Blonsky has since taken to her Twitter account to give more detail about her new position, writing: "Its true Im workin@ Superstar Salon as a makeup artist & more Im proud 2 b workin & helpin pay bills BUT ill NEVER loose sight of my dreams (sic)."
She continued: "Just cause Im part time workin doesnt mean Im gonna give up on my dreams n dont give up on urs I might book something big soon keep positive."
In July, Blonsky denied rumours that she was working at a shoe store, claiming that the media makes up stories too often.