Professor Green and Millie Mackintosh stepped out together for the first time in February

Professor Green has been defending his girlfriend Millie Mackintosh on Twitter.

The rapper got angry after he saw Made In Chelsea's Victoria Baker-Harber bad-mouthing Millie, 22, on the E4 show.

'Did I just see a horse say it'd slap Millie?' Tweeted Professor Green, 28.

'Apologies, I'm nowhere near as dignified as the other half when it comes to these situations, I call a spade a spade, a horse a horse.'

Victoria, 23, saw his Tweets and soon replied: '@professorgreen I'm so offended by your eloquent manner. Sorry, do you need a dictionary for that?'

She went on to Tweet that she was 'surprised' he knew what
a horse looks like because there aren't many of them 'roaming around
the hackney estates darling'
- but she later deleted the message. 

Pro Green then launched a rant aimed at the super-posh swimwear designer.

'@VictoriaBH of course being of the underclass I'd need a dictionary to understand a word which does not in any way apply to you,' he Tweeted.

'You have a foul mouth and you have a foul mouth. That might take you a while to work out...

'You can't help but continually prove what a nasty piece of work you are... continue, please.

'Going to totter off back to a hackney estate where i won't run into any horses. i'll be wearing a tracksuit and smoking b&h gold.'

Professor Green's friend Lily Allen, 27, soon joined in, labelling Victoria a 'tw*t' and 'ubersnob'

Victoria, who continues to receive a string of abuse on the site, then tried to conclude her argument with the East London star.

'Hasn't your 'girlfriend' informed you that its just a TV show? You should try and figure out the boundaries,' she wrote.

'And it is not a case of background. Its 2012. Who cares. Goodnight.'

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Esme Riley