Gay porn star Harry Louis says he is to sue Starbucks over an alleged comment from a barista who told him to “become a man”.

Louis – former boyfriend of prolific designer Marc Jacobs – claims that the incident happened earlier this week when he visited a Starbucks in São Paulo–Guarulhos International Airport.

The Brazilian model and DJ says he intends to sue the coffee company over the ‘humiliating’ incident. Louis alleges that he went to order a hot drink, but the Starbucks wasn’t open until 7am. When he asked when he could order a coffee, Louis says that the female barista told him to “put on an apron” if he wanted one.

“I said no, it wouldn’t be a good look on me, and she snapped saying ‘Become a man and then I won’t offer you my apron!’,” Louis alleges. “I felt humiliated, because there was a line of people watching the scene.”

A Starbucks spokesperson made a statement:

We are actively investigating the incident. We do not tolerate any discrimination against customers, so we are taking the necessary steps to investigate the case and make this right. […] Such behavior does not reflect our values that treat everyone with dignity and respect.’

Starbucks have a great record with pro-LGBT treatment, supporting Pride and marriage equality.  The Human Rights Campaign gives Starbucks a perfect 100 rating for workplace equality.