Kate Moss' little sister was left red-faced today after a drunken tweet which she posted in the early hours of yesterday morning caused some serious offence.

The 17-year-old was out for the night when she sent the "ill thought-out" tweet, which included the N-word.

A drunken Lottie began by tweeting "I want a monkey", following it up with "When a rich n***a want ya and ur girl can't do nothing for ya."

Cringe. Although the line was in fact a lyric from Chris Brown's song Loyal, many of Lottie's followers took offence at her use of the controversial word. 

The model took to Twitter again that morning, saying it had been a "successful night" as she had thrown a drink in her ex's face:

However she obviously realised the error of her ways today, deleting the Chris Brown lyric and posting an apologetic tweet to her 7,000 followers:

Lottie's rep also made an official apology for the model, saying, "'Lottie unfortunately made an ill-thought out use of a song lyric, and she is hugely apologetic if any offence has been caused."

This is not the first time Kate's little sister has gotten controversial on Twitter –  last year she took to the social media site to tell the world how much she hated chavs, writing, "I hate chavs, I hate everything about them, I hate their loud voices and the words 'init', 'phat', 'fam', etc."

Sounds like someone needs to learn when to keep their mouth shut (or their phone switched off)!

Wow. Lottie Moss really, really hates “chavs”.

The model – younger half-sister of the iconic Kate – is known for her unashamedly opinionated tweets, and just couldn’t resist letting her feelings on the grammar skills of some of her social media followers known.

Taking to Twitter, the 16-year-old ranted: “When chavs put status’ I honestly don’t understand half of what they’ve put…The grammar and spelling is shocking.”

There you have it folks. Be sure to have your spellcheck turned on the next time you want to broadcast to Twitter – Lottie could be watching!

Of course, the model’s latest tweets shouldn’t come as a surprise to anyone. Lottie has previously made her feelings towards chavs well-known, once declaring: “I hate chavs, I hate everything about them, I hate their loud voices and the words ‘init’, ‘phat’, ‘fam’, etc.”

So just to confirm, the chav life is not for Lottie.

Lottie has an ever-growing and impressive modelling portfolio to go with her loud opinions. The pretty blonde recently scored a campaign with Calvin Klein Jeans, going on to sign with the prestigious Storm Model Management agency.

We’re sure we can look forward to more of Lottie’s interesting insights as her career continues to skyrocket!