A burqa-wearing Muslim convert teacher says it is sinful for Islamic women to pluck their eyebrows.

Umm Jamaal ud-Din's fiery, two-hour sermon covered the delicate topics of female grooming and obeying Allah.

The Islamic instructor from western Sydney, who is also known as Mouna Parkin, said it was sinful, or haram, for women to pluck their eyebrows, even if they believed it was hygienic.

'You're still falling into a major sin whatever you like to call it yourself,' she said in a YouTube video for her followers.

'You can say as many things that Allah makes haram, like plucking the eyebrows.

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