Big Brother star Rhianna has actually been on TV before and has well-known ex

Big Brother viewers have been left surprised after discovering that one of this year's housemates has already appeared on another reality TV show, and even dated a familiar face.

The latest BB series has certainly given viewers plenty to talk about, with a fresh batch of housemates entering the famous ITV2 house in the hopes of winning £100,000.

But while some contestants are getting their first taste of television fame, it turns out one housemate isn't quite as new to the spotlight as people might think.

Rhianna Collins, 21, who describes herself as a 'stay-at-home daughter', has already caught viewers' attention thanks to her glamorous lifestyle and outspoken personality.

However, eagle-eyed fans have now recognised the Chelsea native from another popular reality series.

It turns out she has a rather well-known ex-boyfriend, too.

The housemate previously appeared on Made In Chelsea (Channel 4)

Before entering the Big Brother house, Collins appeared on E4's Made in Chelsea in 2025, where she was introduced as the girlfriend of Freddy Knatchbull.

Knatchbull, who is the great-grandson of Lord Louis Mountbatten, is no stranger to the spotlight himself, having appeared on the reality show since 2023.

The pair's relationship featured during the programme's 30th series, although their romance wasn't exactly smooth sailing.

When Collins was first introduced to viewers, she made it clear she wasn't going to tolerate any nonsense from her boyfriend.

Speaking about Knatchbull's reputation, she warned: "If you want to mess around... I can mess you around."

It seems things ultimately didn't work out between them, as the couple reportedly split later that year.

Collins' appearance on Made in Chelsea was relatively brief, but that hasn't stopped viewers from recognising her.

After she entered the Big Brother house, fans quickly took to social media to point out where they'd seen her before.

One viewer wrote: "Rhianna was in Made In Chelsea! I don't think that it's right that she comes onto the civilian."

Another questioned: "Wasn't she on Made in Chelsea?"

She was introduced as the girlfriend of Freddy Knatchbull in the show (Channel 4)

Meanwhile, a third commented: "I swear being on Made in Chelsea is normally enough to get on CBB rather than regular BB."

However, her previous television appearance isn't the only interesting thing about Collins' background.

According to her original Made in Chelsea introduction, the reality star grew up travelling around the world with her family before settling in London's affluent Belgravia neighbourhood.

She also revealed that her mum hired a full-time bodyguard to accompany her around London between the ages of 16 and 18 because she was such a 'wild child'.

When she's not appearing on television, Collins reportedly enjoys shopping in Knightsbridge, particularly at Harrods.

"My friends always joke that every time they're in Harrods they see me - who can blame a girl for shopping?" she previously said.

Despite her privileged upbringing, Collins has insisted she's determined to prove there's more to her than people might initially assume.

Before entering the house, she admitted: "I think I could surprise some people - I've always grown up with a stereotype."

She also explained that winning the £100,000 prize would mean a lot to her, particularly because she's spent much of her life relying on her family's money.

While her previous relationship with Knatchbull is firmly in the past, viewers have already been watching her grow closer to fellow housemate Omar El Mayer.

Whether that develops into another reality TV romance remains to be seen.

But one thing's for sure, Collins is no stranger to having her personal life play out in front of the cameras.