By Sarah Bull and Kirsty Mccormack
She had to pull out all the stops to ensure she was the centre of attention at her 21st birthday celebration.
And TOWIE star Lucy Mecklenburgh did just that on Sunday night as she marked her big day with a prom-themed party.
The gorgeous reality star looked stunning in a backless white and gold gown, with her brunette hair piled on top of her head, as she made her grand entrance with fiancé Mario Falcone.
Prom queen: TOWIE star Lucy Mecklenburgh ensured she was the centre of attention as she arrived for her 21st birthday celebrations alongside fiancé Mario Falcone on Sunday night
Svelte: Lucy drew attention to her slim figure in the white and gold dress, which was completely backless
Mario helped the birthday girl out of the white car the pair arrived in as they made their way into the party, which was marked with banners and red and white balloons outside.
Dapper Mario, who looked smart in his black suit and white tie, appeared entirely smitten with his fiancée, gazing at her adoringly as the pair prepared to enter the party.
The event, which was filmed on Sunday night, marks the finale of season six of the hit ITV2 reality show.
This way, ma'am! Lucy's fiancé Mario Falcone looked entirely smitten with his girlfriend as he helped her out of the white car the pair arrived in and into the party
Grecian goddess: Lucy looked stunning in the white and gold dress, which she accessorised with her brunette hair piled in a chic up do
So it comes as no surprise that Lucy wasn't the only female member of the TOWIE cast who went all out for the occasion.
Sisters Sam and Billie Faiers did their best to try and out do the birthday girl by turning up in glamorous floor-length dresses.
Billie opted for a flowing teal number that luckily didn't show off too much cleavage and featured a patterned neckline.
Sibling rivalry: Billie and Sam Faiers arrived for filming wearing long glamorous gowns as they wrap up the sixth series of TOWIE
Happy couple: Sam and her boyfriend Joey Essex posed for photos before making their way into the party
Getting hot, girls? Billie and Sam appeared to be struggling later in the evening in their long gowns, lifting them up to keep themselves cool
Close behind her way her sister Sam, who did decide to show off her chest.
The Minnie's Boutique owner highlighted her slender figure in a lilac gown that featured a jewelled top and cutaway sides as well as a very low V-neck.
Sam had clearly had extensions put in as her blonde hair was looking much longer, and as she arrived hand-in-hand with her boyfriend Joey Essex, she also had a huge grin on her face.
Beautiful in black: Lucy's best friend Lydia Bright also opted for a backless dress in this stunning outfit
Green with envy? Lauren Goodger, who has always had a volatile friendship with Lucy, wore a bottle green maxi dress for the party
Cheer up! Lauren looked deep in thought and close to tears as she left the party at the end of the night
Joey looked rather dapper in a pair of grey checked skinny suit trousers, a smart white shirt and a dark blazer.
Someone else who opted to wear grey was Tom Pearce, who arrived with a member of the crew.
Another couple who made somewhat of an entrance was Gemma Collins and James 'Arg' Argent. The pair were seen having a heart-to-heart outside and had worn matching black outfits.
Matching pair! Gemma Collins and her boyfriend James 'Arg' Argent both wore black attire
Special moment: Gemma and Arg were seen holding hands and having a chat as they waited for the rest of their co-stars
Going all out: Arg later lost the jacket to show off his gold shirt in all it's glory, while Jessica Wright wore a cute blue minidress with heel-less shoes and a tiara for the party
While Gemma looked glamorous in a floor-length black number, Arg got it very wrong in a shiny suit and a matching shirt. He was later seen losing the jacket to show off his gold shirt in all its glory.
Meanwhile, Lauren Goodger, who has had an incredibly volatile friendship with Lucy, who also used to date Lauren's ex-fiancé Mark Wright, opted for a bottle green maxi dress for the occasion.
And Lydia Bright also dressed to impress in a backless black sequinned dress, which featured prominent padded shoulder detailing.
Following the filming session, the group were seen piling into a hummer limo which clearly had something to do with the prom theme of Lucy's party.
The reality TV star will celebrate her 21st birthday on August 24.
Where's Lauren? Tom Pearce was seen chatting with a member of the crew as he made his way inside
Just like prom! The group were seen piling into a hummer limo once they had finished filming