Let the birthday celebrations commence! Pixie Lott stuns in monochrome as she marks 22nd with boyfriend Oliver Cheshire

PUBLISHED: 10:40, 12 January 2013 | UPDATED: 16:33, 12 January 2013

It was the start of her birthday weekend so Pixie Lott of course ensured she dressed to impress as she marked her 22nd year on Friday night.

The Mama Do hitmaker headed out for a night of partying with model boyfriend Oliver Cheshire.

The pair rang in her birthday, which is actually on Saturday, at the Rose Club.

Birthday girl: Pixie Lott stands out in black and white as she heads out to celebrate her 22nd with boyfriend Oliver Cheshire

Before heading out for the night, Pixie wrote on Twitter: 'The birthday weekend begins wowowoeowowoowowowo come on the cats!'

Clearly in an excited mood as her celebrations got underway, Pixie held Oliver's hand as they started as they meant to go on.

She looked stunning in a monochrome get-up, which consisted of a white mini skirt with an intricate flower print to show off her picture perfect legs.

Celebrations: The Mama Do hitmaker looked stunning in a black head band as she left London's Rose Club

Slender: She showed off her legs in white mini dress and skintight black top on Friday evening

Her big night: Pixie turns 22 on Saturday and started off the celebrations an evening early on Friday

Ignoring the chilly January weather, she kept her pins bare as she completed her look with a skintight black halterneck and silver strappy shoes.

And true to her bohemian style, the singer wore a big black flower headband over her wavy blonde locks from her own Rock N Rose collection from www.rocknrose.co.uk to make sure she stood out even more.

Carrying her leather jacket and clutch bag, she co-ordinated with Oliver, who also wore a leather coat with black trousers.

Date night: The couple dressed to impress as they headed out for the evening of partying

Monochrome chic: The pop star showed off her legs in the white mini dress, while completing her look with black top and leather jacket

Joining pals: They were seen inside mingling with friends before finally calling it a night

The chiselled model finished off his smart ensemble with a beige jumper over a shirt and black shiny shoes.

Clearly having had a fun evening, the pair finally called it a night and were seen jumping into a waiting car ready to be taken home.

And the pop star will no doubt continue the celebrations over the weekend.

She added on Twitter on Friday morning: 'Let the birthday celebrations begin!!!!!!! Birthday weekend with the Ducksta and co Ahh @joceesmusic @georgie_gw @harrietheath XX.'