A Bachelorette almost comes to blows with an audience member during tonight's final episode of The Bachelor.

A short preview video released by TV3 shows Naz Khanjani getting feisty with an audience member after she calls her a "bitch" during the special.

The scene is due to screen as part of tonight's Bachelor special, which sees the show's contestants confront Bachelor Jordan Mauger for the first time since being dumped.

As host Mike Puru interviews Khanjani, an audience member interrupts them by yelling out, "You were a bitch," prompting Khanjani to show off her fiery side.

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"Do you want to come here and say it? I dare you ... I f***ing dare you," she replies. "You guys have no f***ing idea what it's like because you weren't in my shoes."

Khanjani came second in the show when Mauger dumped her in Monday night's finale in favour of the winner, Fleur Verhoeven.

Spy today reported Khanjani "swore like a sailor" during her appearance on stage.

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She seemed distraught when Mauger admitted he was choosing Verhoeven, but wished the pair well.