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New photos show Tallulah Willis surrounded by her family when she unveiled her wedding gown at her final dress fitting.

The youngest daughter of Demi Moore and Bruce Willis married her musician boyfriend of three years, Justin Acee, in Sun Valley, Idaho, on Saturday.

A week before the wedding Tallulah had her final dress fitting in the luxurious surroundings of the Chateau Marmont in Los Angeles.

The fitting was covered by Vogue with photos showing the emotional moment Tallulah stepped out in her custom dress, leading to gasps from Demi and her sisters Scout, 35, and Rumer, 37.

Balenciaga creative director Pierpaolo Piccioli created a custom dress for Tallulah -one of the first bridal gowns he’s created in his post as creative director of the historic fashion house.

It was a major pivot for the bride who six months before her big day was sending her sisters screenshots of gowns she had found on Etsy.

New photos show Tallulah Willis surrounded by her family including mom Demi Moore when she unveiled her wedding gown at her final dress fitting

The youngest daughter of Demi Moore and Bruce Willis married her musician boyfriend of three years, Justin Acee, in Sun Valley, Idaho, on Saturday in a custom Balenciaga dress

Also working with Demi’s longtime stylist Brad Goreski, Tallulah's brief was a 'whimsical and ethereal' dress that summed up the magic and magnitude of her big day.

'The best part of the dress is the magnitude,' the bride told Vogue. 'It’s the thing that’s getting me to my new husband.'

'We made a decision at the very beginning of our relationship that we were going to choose each other every day.'

'My biggest hope [for the dress] was that [it would be] something magical, but magical in a way that was unexpected, kind of like me. I’ve worked very hard to be comfortable in my own skin, to be in something that there’s a strength in is profound for me.'

'I’ve worked so hard in my life to be able to find that beauty every day… this is definitely a very special peak celebration moment of beauty.'

The result was a stunning silk satin strapless gown with silk organza petals which were hand beaded and a bow in the back that Pierpaolo designed 'to be like a package that was being unwrapped.'

The fashion house spent 712 hours working on the dress, with nine hours dedicated to the veil alone.

Tallulah walked down the aisle in an outdoor Idaho ceremony on Saturday.

Tallulah invited Demi and her sisters Scout, 35, and Rumer, 37, to the final fitting at the Chateau Marmont a week before walking down the aisle

Balenciaga creative director Pierpaolo Piccioli created a custom dress for Tallulah -one of the first bridal gowns he’s created in his post as creative director of the historic fashion house

The star-studded guest list included Demi's Charlie's Angels co-star Lucy Liu, actor Andrew Garfield and designer Zac Posen whilst the bridal party was made up of Tallulah's sisters, who looked stunning in matching strapless mint-green bridesmaid dresses.

The ceremony took place in a woodland, with the outdoor venue dressed with whimsical props including gilded mirrors, topiary and huge floral arrangements.

Guests enjoyed dinner on mismatched crockery, with the long tables dressed with dusty pink roses in glass vases.

A beaming Tallulah was seen cozying up to her new husband, who looked dapper in a tux as the speeches took place after the feast.

Later, as the sun set, DJ Samantha Ronson took to the decks whilst mother of the bride Demi held court in the lounge areas set up around the dancefloor.

The fashion house spent 712 hours working on the dress, with nine hours dedicated to the veil alone

Idaho has particular significance for Tallulah, who spent much of her early childhood on the family's ranch there after Bruce and Demi moved from Los Angeles partly for the sake of their daughters.

The former couple raised Tallulah and her sisters in Hailey for several years, away from the full glare of Hollywood.

Bruce and Demi, who were married for nearly 13 years before divorcing in 2000, also established longstanding property and business interests in the town.

Tallulah's beloved dad Bruce was not thought to be present at the wedding amid his devastating battle with dementia.

The movie star now receives round the clock care and lives in a one-story adapted home, close to his wife Emma and their two daughters.