Monaco misfires! Worst dressed at the Grand Prix as stars including Cynthia Erivo, Catherine Zeta-Jones and Kelly Piquet miss the mark

It was a mingling of the wealthy and famous on Sunday as an array of well-known faces stepped out to attend the F1 Grand Prix of Monaco.

The likes of Kim and Khloe Kardashian, driver Max Verstappen's girlfriend Kelly Piquet and Olivia Wilde turned the pit lane into their own personal catwalk when attending the prestigious event in Monte Carlo.

But whilst some put on an overly glamorous display, others missed the fashion mark, sporting casual ensembles or bizarre garments.

For instance, Cynthia Erivo looked better prepared for a night out than she did a walk around the paddocks.

The Wicked star opted for statement red leather trousers, teamed with a pair of wedge heels and a denim shirt, left open to showcase her white T-shirt.

Meanwhile, Catherine Zeta-Jones made a rare fashion misstep as she joined her husband Michael Douglas on Sunday, strolling hand in hand through the paddock in coordinating navy-blue looks.

But her floral jumpsuit, featuring a cinched waist and shirt collar, teamed with a pair of sunglasses and glitzy hoop earrings, failed to impress some fans.

Elsewhere, model Kelly Piquet, the daughter of F1 star Nelson Piquet, who won three Drivers' Championships himself in the 1980s, commanded attention in an unusual jacket which was hemmed with pompoms.

Jumanji star Karen Gillan, meanwhile, put on a leggy display in a velvet blue skirt suit, paired with striking ankle boots.

Olivia Wilde dressed for the sun in a strappy white dress - but also teamed her outfit with black shoes, wearing a pair of loafers.

But it wasn't all style mishaps at the Grand Prix, with Kim Kardashian leading the most glamorous celebrities at the occasion.

The reality TV star, 45, turned heads as she arrived with her sister Khloe, 41, and their huge entourage to watch Kim's boyfriend Lewis Hamilton race.

Kim - who made her first appearance at a race since going public with the Ferrari driver on Saturday - wowed in a daring backless cream dress and sky-high heels.

Her sister Khloe also opted for a neutral look in a lace-trimmed slip dress and a white waistcoat.

Kardashian and Hamilton, who have been friends for over a decade, have been going strong for nearly six months after they were first spotted getting cosy on New Year's Eve in Aspen. 

They went public with their romance at the Super Bowl in February then subsequently went Instagram official.

Just last week, Kardashian and Hamilton took a huge step in their relationship as he was seen with her four children, who she shares with ex Kanye West, for the first time. 

A source previously said that the couple have an 'intense' relationship and added that Kardashian's family absolutely 'adores' him.

But it wasn't the best start to race day for Kim on Sunday though as she was blasted by Formula 1 fans on social media after a toe-curling encounter with a TV reporter.

While watching the pre-race ceremony unfold in the Mediterranean principality, Kim was approached by Martin Brundle of British broadcaster Sky Sports, whose iconic grid walk has become a staple of every F1 race.

Brundle walked up and down the grid in the moments before the race looking for celebrities and drivers to interview. He noticed Kim and Khloe stood by the track and approached them to try and get a word while on live TV.

But both Kardashian sisters chose to ignore Brundle, refusing to say a single word to him before they turned to their entourage in a bid to seemingly get him moved away.

The embarrassing moment sparked fury among the fans watching on at home.

One commented: 'Kim Kardashian is not too good to talk to Martin Brundle. What a complete lack of class.' Another added: 'Didn't we just know Kim Kardashian would refuse to speak to Martin Brundle.'

Another talked-about moment came when Holly Willoughby and Michael McIntyre had an unexpected encounter with the Kardashians during their glitzy weekend at the Monaco Grand Prix.

The TV pals travelled to Monte Carlo to watch the Formula 1, but there was plenty of drama away from the track when the reality stars made their grand entrance.

Michael and Holly were being interviewed by Sky Sports presenter Natalie Pinkham, when they were caught up in the sisters' paddock walk.

Holly gushed 'we are so lucky to be here', just before burly security guards rushed into frame and jostled Holly, Michael and Natalie out of the way. 

'It's a wave!' yelled Michael, before noticing: 'It's the Kardashians! I'm joining them!'

Michael hurried after Kim and Khloe leaving a shocked Holly behind.

'We've got a live update,' Michael said as he returned. 'I've just been hit by like a wave. You know when you're on holiday and a wave hits you and it's like "that's actually quite dangerous". We've been Kardashian waved.'

Holly agreed, quipping 'that was ridiculous', before Michael joked he had sustained an injury from the collision. 

'My back's gone. I think something belonging to Kim, I'm not mentioning anything, may have struck me in my lower back earlier,' he joked. 'And I gotta tell you, it hurt!'