Jessie J is not normally one to skimp on costume changes.

She has hit the headlines on numerous occasions over the last year and her position in the world of celebrity may have been slightly rocked at times.

She was only recently rumoured to be dating Loveable Rogues lead singer Eddie Brett two months ago.

It was her first UK festival of the year, and Beyoncé made sure she hit the headlines for more than one reason.

They are both known for their slim figures and their love of fashion.

They at first gave it their all at Weston Park in Staffordshire on Saturday afternoon before heading south on Sunday for the Chelmsford arm of the festival based at Hylands Park.

Having spent plenty of time backstage in the VIP Louder Lounge mixing with the likes of Union J, Conor Maynard and Olly Murs, Niall enjoyed some less familiar but no less welcome company as Saturday’s proceedings drew to a close. In pictures posted on Twitter, the Irish heartthrob is seen giving one lucky fan a welcome kiss on the cheek as he hung out in the event’s VIP Louder Lounge that evening.

So it's no surprise that she would support him. Kim Kardashian tweeted her praise for boyfriend Kanye West, 36, after he performed Blood on the Leaves at the 2013 MTV Video Music Awards.

Outrageous rap star Iggy Azalea turned heads on the red carpet in a see-through dress with embellishments that barely covered her modesty

The 48-year-old admitted on the Today show this morning that she was among the many who were left stunned by the former child star's routine at the Sunday night ceremony.

She performed on stage at the MTV VMAs in a barely there bikini but Lady Gaga attempted to cover up, on the bottom at least, as she hit up the afterparty.

They kept fans on the edge of their seats over whether or not they would reform for Sunday night's MTV awards - which only served to heighten anticipation further

'N Sync fans prepare to be disappointed - there will be no repeat of Sunday's performance.

The 20-year-old's now-signature tongue out-twerking appalled everyone, including The Parents' Television Council, which slammed the performance, and blamed MTV for allowing such an 'unacceptable' routine to air.

Superstar singer Beyonce was embroiled in an ugly brawl at Monday night's post VMAs party, a report claims.

Singer wore a little black dress as she joined her husband at the PHD Rooftop party.

Travelling by coach is not usually considered to be the most glamorous means of transport – often associated with rainy holidays in the UK.

Sandra Bullock and George Clooney were simply glowing at the first day of the festival's 70th anniversary.

She might not be performing at tonight's event, but Rita Ora's black and yellow strip dress was a performance in itself as she hit the red carpet at the GQ Men of the Year Awards.

Emma Watson was certainly catching people's attention at the GQ Men of the Year Awards in a midriff-exposing ensemble.

She showed off her petite waist with the cream coloured top which had large shoulder pads incorporated into it.

The pair were seen curbing their appetites by enjoying a late-night run to fast food restaurant McDonald's as their night of revelry came to an end at around 3.30am.

Knows how to shine

She shot to fame playing blood sucker Alice Cullen in the Twilight Saga franchise. And Ashley Greene looked particularly vampish as she attended the KaufmanFranco show at the Lincoln Centre during New York Fashion Week on Monday.

The 37-year-old actress arrived at the Donna Karan Spring 2014 show in New York on Monday, showing off her incredible figure

The reality TV star turned DJ has been flitting between shows and parties as she aims to get the full fashion week experience.

Jessica Biel knows how to rock a black tie event.

Ora was joined on stage by Iggy Azalea and actress Emmy Rossum, who both danced next to her as she continued singing.

Wearing a floor-length Romona Keveza dress, the 45-year-old looked light-years apart from her frumpy-dressing alter-ego.

Michael Douglas, 68, went solo to the Emmys on Sunday, but found red carpet companionship with his Behind The Candelabra co-star Matt Damon and his wife Luciana.

Anna Gunn did take home Best Supporting Actress.

January Jones, Zooey Deschanel, Kerry Washington and Claire Danes led the way in a dazzling array of dresses, looking their glamorous bests as they stepped out at the Nokia Theatre in Downtown Los Angeles.

Opening the Venice Film Festival, Sandra Bullock and George Clooney descended on the Palazzo del Cinema to present their new film Gravity.

Susanna Reid looks like she has well and truly caught the Strictly Come Dancing bug as she graced the red carpet in an vibrant, sexy blue dress for the Pride Of Britain Awards.

They dated after meeting on the set of 1996 movie A Time To Kill. And even though they have long moved on, Sandra Bullock and Matthew McConaughey are still friends and she has even become close with his wife Camila Alves

DCI John Luther and the murderous Alice Morgan reunited - or rather actors Idris Elba and actress Ruth Wilson in a warm embrace on the red carpet.

Gemma Arterton debuted an impressive updo while stylishly covering up in a black coat and trousers for the Harper’s Bazaar Women Of The Year Awards.

It's the embarrassing display feared by most teenagers, and even celebrated designer and fashion superstar Victoria Beckham is not above it.

The stars were spotted chatting away as they watched the Super Bowl XLVIII on Sunday afternoon with their manager Simon Fuller.

Super Bowl XLVIII was as much about the A-list fans coming out to show their support for their favourite team as it was the action happening on the field

They were front and centre to attend one of his girlfriend's favourite designer's New York Fashion Week show. But if Lara Bingle and partner Sam Worthington were excited about what they were about to see, they certainly weren't showing it.

British singer Rita Ora wore a zebra-print fur coat over a black and red plaid dress while American actress Victoria Justice looked elegant in monochrome black and white as they lent their support for designer Donna Karan at her fashion show Sunday.

Chung, who has modelled before for the designer, looked fashion forward in a lemon fluffy jumper which she teamed with a matching lemon and metallic skirt.

Jennifer Connelly flashed her trim pins in a thigh-skimming, all-black look as she made her way through New York for a Fashion Week event on Sunday.

Actress Emma Watson has made a stunning appearance at the 86th Academy Awards in California.

The 23-year-old tripped over her strapless orange gown as she climbed out of her limousine,but was helped to her feet by her boyfriend Nicholas Hoult outside the Dolby Theatre in Los Angeles on Sunday.

The Australian fashion industry got a big tick of approval on the Oscars red carpet this year.

It is the biggest night in showbusiness and the greatest fashion show on earth.

On Tuesday Amy Childs and Lisa Snowdon came close to showing up in the same outfit as they attended the TRIC awards in London.

Peter Andre's fiancé Emily MacDonagh stepped out in a yellow minidress just nine weeks after giving birth, for the TRIC Awards on Tuesday.