Only last week a hacker attempted to sell private photos of Pippa Middleton to the press.

And it appears that Kate Moss is the latest victim of an online security breach - as it's reported someone allegedly broke into her sister Lottie's Facebook account and circulated private photos of her on the net.

According to The Sun, the photos include ones from her birthday celebrations this year, which show Kate and her friends lying on the floor after partying hard.

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Hacked: Kate Moss (pictured) is reportedly the latest victim of an online security breach - as it's revealed someone allegedly broke into her sister Lottie's Facebook account

A source told the publication: 'Kate isn't on social media but Lottie is quite open on all her platforms — although she has become far more guarded now.

'She realises she's a target for trolls who want information on her and her sister.

'None of the images were ever intended to be shared with the world so it's not very nice for them to have these personal moments pored over by some faceless hacker.'

When model Lottie regained control of her account, she posted to her Facebook friends: 'When ur Facebook gets hacked and they change ur password lol okay.' (sic)

Mischief maker: The hacker allegedly broke into Lottie's Facebook account and circulated private photos of her and Kate on the net

MailOnline has contacted reps of Kate and Lottie for comment.

Meanwhile, Kate has reportedly 'quietly' reached a formal separation agreement with former husband Jamie Hince.

The 42-year-old model - who married The Kills guitarist in 2011 but split last year after four years of marriage - is allegedly describing herself as 'divorced' and apparently came to a pleasant agreement with the musician 'some time ago' without any 'high profile legal battle'.

A source told The Mirror Online: 'They reached an agreement some time ago, and neither of them wanted to make a spectacle of this.

Back under control: When model Lottie regained control of her account, she posted: 'When ur Facebook gets hacked and they change ur password lol okay.' Pictured: Kate Moss

'Instead, they agreed things between themselves and have quietly made the split formal without going through any sort of high profile legal battle.'

It has been reported Kate - who has 14-year-old daughter Lila with her former partner Jefferson Hack - has been granted the majority of their wealth, whilst Jamie is believed to have acquired possessions the former couple acquired during their four-year marriage, including paintings and other artworks.

Meanwhile, the catwalk icon - who is believed to be dating Count Nikolai von Bismarck despite rumours the couple's relationship is on the rocks - has recently enjoyed a romantic getaway in Venice, Italy, with Nikolai, which saw her beau publicly declare his love for her.

All sorted: Meanwhile, Kate has reportedly 'quietly' reached a formal separation agreement with former husband Jamie Hince (pictured on their wedding day)

All settled: Kate is allegedly describing herself as 'divorced' and apparently came to a pleasant agreement with the musician 'some time ago' without any 'high profile legal battle'

Restaurant owner, Giovanni Fracassi, spotted the pair cosying up together, he said: 'He [Nikolai] shouted out 'Ti amo', and then went down on his knee. It was very romantic.

'He took out a ring and it was funny because he said it's for after she is divorced. They were very much in love and she seemed so happy, I never saw her so happy before.'

However, since being home Nikolai has been absent from star studded events, despite previously being glued to Kate's hip.

Speaking previously about Dave Gardner's star-studded birthday bash in London last month, which saw Kate party alone with friends, a source said: 'Kate didn't seem too down at the party and didn't let slip any sadness about her love life.

'But Nikolai is normally permanently attached to her side so it was obvious there was something going on.'

Happy couple? The catwalk icon is believed to be dating Count Nikolai von Bismarck despite rumours the couple's relationship is on the rocks