Opposite Valentines: Tamara Ecclestone wears sexy scarlet dress for romantic dinner date while sister Petra dresses down.

Every girl wants to look their very best when their beau is taken them for a romantic meal.
And Tamara Ecclestone was no exception, as she put on her best designer frock for a Valentine's date with her boyfriend.
The socialite was snapped arriving at a private members' club in London's Mayfair last night.

Red hot Valentine: Tamara Ecclestone arrived at a private members' club in London last night in a very pretty scarlet designer dress

She looked very pretty in a short dress with vertical stripes by Alaia as she stopped for pictures outside Annabel's.
And aptly, she settled on red, the colour of love, to spend the romantic night with her stockbroker boyfriend Omar Khyami.
And she teamed the dress with towering rose gold peep-toed Louboutin heels and a matching clutch bag.

All that glitters: Tamara teamed the short dress with gold Louboutin heels and a matching clutch bag

But just like any girl whose wardrobe is bursting at the seams with a fabulous collection of clothes, Tamara, 27, was undecided what to wear until the last minute.
She even took to her Twitter page to talk about her dilemma with her tens of thousands of followers and wrote: 'Omar is taking me to Anabelles (sic) for dinner tonight love it there so romantic. Just need to decide what to wear! Can't decide whether to wear red or pink?'

Love is in the air: Tamara looked very excited about her night ahead as she posed for pictures and then headed inside to meet her stockbroker beau Omar Khyami

Once dressed and ready, she added: 'Decided to wear red Alaia dress and rose gold Louboutin shoes and clutch feels very Valentines day appropriate!'
Meanwhile, on the other side of the world, her younger sister Petra decided that she would be spending Valentine's Day in casual attire.
Petra, 23, was seen in Los Angeles leaving Italian eatery E Baldi in Beverly Hills.

Dressed down: Petra Ecclestone was snapped with her husband as they headed to a Valentine's Day lunch in Los Angeles

She was dressed down in white skinny jeans, hi-top sneakers with multi-coloured Velcro fasteners and a light pink jumper.
She teamed the casual look with an Alexander McQueen pink skull scarf, large black sunglasses and a mink-coloured bag.
She was with her entrepreneur husband James Stunt as they left the celebrity hang-out with a female friend.

Heading home: Petra made her way to the restaurant's valet after chatting to her friend in the street

But there was no passionate and public display of Valentine's affection from the pair as they went their separate ways.
Petra gave her husband of six months a peck on the cheek before she got into her waiting car.

See you later, darling: Petra and James give each other an affectionate kiss on the cheek as she leaves him and heads home