So it was no surprise that Kim Kardashian looked glum as she touched down in Los Angeles this afternoon, after her recent trip to London.
The usually camera friendly 30-year-old kept her head down as she faced the media storm waiting for her at LAX airport.
Downcast: Kim Kardashian looked glum when she touched down in Los Angeles this afternoon, as Bret Lockett affair claims continue to rumble
Ring on it: In an act of defiance, Kim still was wearing her $2 million engagement ring given to her by Kris Humphries
The reality star swept her hair up in a tight bun, unusual for the star who prefers it coiffed and flowing.
Shielding her eyes with giant sunglasses and keeping her head down low, Kim was clearly not in the mood.
Kim has demanded an apology from Lockett, after he claimed the pair had a five-month affair.
A lawyer acting on behalf of reality star Kim's behalf sent a stern legal letter warning the NFL player of a potential lawsuit if he continued to make the claims.
But the sportsman has refused to back down, claiming he has 'concrete proof' of the 'long-distance' relationship, which he says was conducted entirely via telephone.
His alleged evidence includes 'intimate' photos sent by text message, flirty text messages and phone records showing conversations between the two.
Not herself: Shielding her eyes with giant sunglasses and keeping her head down, Kim was clearly not in the mood
Despite Lockett's claims he refused to give details on when his 'affair' with Kim took place.
But in a video interview on TMZ he even hinted that he would submit the evidence to court if sued by Kim.
Denial: Kim in London yesterday, has reacted angrily to claims she had an affair with NFL player Lockett, pictured right
'At the end of the day, Kim knows what happened and I know what happened,' he said.
'Kim can deny this all she wants, but if she wants to go the legal route and start recalling text messages and conversations and pictures and all of that, then that's not a problem.'
InTouch, which reported the claims under the headline: 'Kim caught cheating', backs its claims with a series of relatively harmless undated texts it claims a friend saw on Lockett's phone.
New love: Kim is happily engaged to sports star Kris Humphries
In one it alleges she told him 'You should SEND me a sexy picture.'
Kim is alleged to have asked a friend to get Lockett's number for her from his brother.
Lockett told the magazine: 'She pursued me.'
Kim, currently in London promoting her various business lines, made what appeared to be a veiled reference to the reports on her Twitter page.
She wrote: 'Remember, people only rain on your parade because they're jealous of your sun & tired of their shade.'
Meanwhile, in Beverly Hills today, Kourtney enjoyed some serious retail therapy with her boyfriend Scott Disick and baby son Mason.
Disick was no doubt relieved not to be the protagonist receiving the most negative publicity for once.
Off the hook: Sister Kourtney spent today with boyfriend Scott Disick and son Mason shopping in Beverly Hills