By Kimberley Dadds
It was one of her biggest nights in the showbiz calendar after being named the 67th sexiest woman in the world by FHM on Tuesday.
And Lucy Mecklenburgh was clearly excited about attending the glitzy party following the awards as she took to Twitter ahead of the bash.
But her hopes were dashed when security apparently banned her from entering because winner of the night Tulisa Contostavlos was inside.
Banned! TOWIE's Lucy Mecklenburgh was reportedly turned away from the FHM 100 Sexiest Women in the World party because Tulisa was inside
The N-Dubz singer's management had reportedly given strict instructions to security that they wouldn't allow Tulisa to attend if anyone from The Only Way Is Essex was allowed in.
And as she had topped the poll, organisers were said to be keen to follow orders so they could secure her attendance.
Lucy was even prevented from walking the red carpet and to add insult to injury she was told she could attend the party once Tulisa had decided to call it a night and leave.
A source told the Daily Star: 'She was told if she turned up Tulisa wouldn't be allowed to and they really needed their winner at the event...
In: Organisers were keen for Tulisa to attend as she had topped the poll - and her management refused to let her go if anyone from TOWIE was allowed in
'It was a massive slap in the face seeing as she had made their list.'
And the snub left Lucy devastated after she'd spent the day getting ready and had even got her outfit for the night out.
She wrote on Twitter ahead of the party: 'So flattered that I'm in #FHM100sexiest in the world !!!! I can't believe it !!! Can't wait for the party tonight!!xx.
'Just got the most beautiful Haute Hippie nude feather dress from @Vanilla_Style ! Can't wait to wear it later #FHM100sexiest.'
Happy! Lucy couldn't wait to go to the bash after she was named 67th in the poll
...But she later seemed to take a dig at Tulisa after she was left 'upset' as she was turned away
But a little while later she wrote how she had been left 'upset' and seemed to take a dig at Tulisa as she wrote: 'People need to remember where they come from !!!!! I'm soo upset.'
And ever the supportive boyfriend, Mario Falcone quickly tried to cheer her up as he gushed: 'Be home soon baby, don't b upset! Love you xxx.'
And he took a swipe at Tulisa for even managing to land the coveted title: 'Do not understand how Tulisa won FHM 100 sexiest women.... Must be a fix!!!'
Organisers were said to be embarrassed about the snub and even told Lucy to 'go to any hotel, stay the night, enjoy room service and FHM would pick up the bill'.
Supportive boyfriend: Mario Falcone comforted Lucy after her snub and took to Twitter to take a swipe at Tulisa winning the top spot
Night out: Mario attracted a lot of attention when he went out on the town in London last night
But another source is blaming FHM for the mishap because 'they wanted to raise the profile of the event by having Tulisa and other top stars show up'.
Tulisa was joined inside by her boyfriend Jack O'Connell, as well as Georgia Salpa, Helen Flanagan and Emily Atack.
And while the TOWIE cast were reportedly banned, they were obviously happy to have stars from rival reality show Made In Chelsea inside as both Millie Mackintosh and Caggie Dunlop were attendees.
Meanwhile, it appears Tulisa's star seems to be on the rise as she's tipped to land the number one with her track Young this weekend.