Planning on getting a potters' wheel? Rochelle Wiseman looking all-white in tight bandage dress on romantic night out with Marvin at Ghost The Musical premiere

By Jody Thompson

Last updated at 11:48 PM on 19th July 2011

They're one of the most loved-up couples in showbiz - so no-one was spooked when The Saturdays star Rochelle Wiseman and her JLS singer boyfriend Marvin Humes arrived at the West End premiere of Ghost tonight.

The classic 1990 love story starring Demi Moore and the late Patrick Swayze has been made into a musical and opened last night at London's Piccadilly Theatre with former Corrie star Richard Fleeshman and Caissie Levy in the lead roles.

For her romantic night out with her beau, 22-year-old Rochelle was looking stunning in a tight white bandage minidress with an elaborate turquoise necklace, with towering black heels and a bright red handbag.

Scroll down to see the famous 'pottery scene' from Ghost...

Bit of all white: Rochelle Wiseman looked stunning in a tight white bandage dress on a night out with boyfriend Marvin Humes to see the London premiere of Ghost the Musical last night

Ditto: The scarily-alike couple looked as loved-up as ever at the Piccadilly Theatre

High spirits: Rochelle looked sensational in a white fringed bandage dress as she pretended to shape a pottery vase with her right hand

Marvin, 26, meanwhile looked dapper in a quirky three piece stone grey checked suit with deliberatly darker trousers and a tight white T-shirt.

The pair were accompanied by Marvin's bandmate Jonathan 'JB' Gill and his longterm girlfriend Chloe Tangney - and gooseberry for the night, Aston Merrygold.

Other stars out to see the West End version of the movie included Girls Aloud star Kimberley Walsh who was beaming broadly as she clutched her programme, looking very smart in a black trouser suit with a a white T-shirt and black peeptoe Louboutins.

Righteous brothers and sisters: Rochelle and Marvin were joined by JLS bandmates Jonathan 'JB' Gill (L) with girlfriend Chole Tangney and Aston Merrygold

Denise Van Outen had also opted for black with a pretty ruffle-sleeve top paired with dark skinny jeans and snakeskin print sandals.

So You Think You Can Dance judge Arlene Phillips was also feeling the dark side in a black dress with a pleated skirt, teamed with a black gold studded leather jacket, black tights and patent heels.

It wasn't just the women flocking to see the famous weepy either - boy band McFly had turned up to see the production too.

What a vision: Girls Aloud star Kimberley Walsh looked stylish in a chick black trouser suit and Louboutin heels

The London stage version - like the movie - tells the story of Sam and Molly, a couple who are deeply in love, but who's lives are ripped apart when Sam is murdered in a mugging gone wrong.

But his love for Molly is so strong, he finds himself trapped as a ghost - but realises that his death was no accident and he must warn Molly about the imminent danger she's in.

However, because he's a ghost, he can't be seen or heard by the living, so he tries to communicate with Molly through Oda Mae Brown, a psychic, played by Whoopi Goldberg.

The dark side: Both Denise Van Outen, left, and so You Think You Can Dance judge Arlene Phillips were clad in black

The movie features the famous pottery scene, where Molly is trying to make a pot on a wheel with Sam sat behind her - but they get too amorous and covered in clay instead, as the Righteous Brothers Unchained Melody plays.

It also has a running catchphrase though it, with Sam always replying 'ditto' when Molly says she loves him and vice versa.

That haunted look: Former Coronation Street star Richard Fleeshman plays Sam Wheat in the play with Caissie Levy as Molly Jensen

But when he becomes a ghost, he can't be seen or heard by the living, and so he tries to communicate with Molly through Oda Mae Brown, a psychic who didn't even realise that her powers were real.

Ghost The Musical had its world premiere in Manchester in March and naturally, Unchained Melody features, with other original music written by Eurythmics star Dave Stewart.

It's being directed by Tony Award-winning director Matthew Warchus, with set and costume design by Rob Howell and choreography by Ashley Wallen.

Hearing voices: Whoopi Goldberg plays psychic Oda Mae in the movie, the link between Sam and Molly

Believe: The late Patrick Swayze gets to grips with Demi Moore in the famous pottery scene from the 1990 original film version of Ghost

Meanwhile, it's been revealed that Marvin is planning on proposing to Rochelle.

Marvin and Rochelle split last year after eight months together but gave their love a second chance after a two-month separation.

Since reuniting their relationship has gone from strength to strength and the singing couple have even moved back in together.

This week's Heat magazine said that Marvin had already paid a visit to upmarket jewellers Tiffany ahead of getting down on one knee.