Lauren Sánchez Dazzles in Busty Strapless Look with Billionaire Fiance Jeff Bezos at Sunset Blvd Opening Night

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Lauren Sanchez will be with her fiancé Jeff Bezos on Sunset Blvd for Broadway's opening night this Sunday in New York City.

The 54-year-old socialite accompanied her 60-year-old billionaire boyfriend on the red carpet and then inside the theater.

Sánchez teamed with a diamond-encrusted necklace and cross pendant in a low-cut, dark velvet number by designer Laura Basqui.

Her long jet black locks were parted and fell in a soft, silky texture over one shoulder.

The Amazon executive was clean-shaven and wearing a black button-down shirt with the sleeves rolled up to the elbows.

Lauren Sánchez attended the opening night of Sunset Boulevard on Broadway in New York City with her fiancé Jeff Bezos on Sunday.

The 54-year-old socialite accompanied her 60-year-old billionaire boyfriend on the red carpet and then inside the theater.

The 54-year-old socialite accompanied her 60-year-old billionaire boyfriend on the red carpet and then inside the theater.

Sanchez stepped out in a low-cut, dark, velvety dress by designer Laura Basqui, accessorized with a diamond-encrusted necklace and cross pendant.

Sanchez stepped out in a low-cut, dark, velvety dress by designer Laura Basqui, accessorized with a diamond-encrusted necklace and cross pendant.

Lauren showed off a glowing face in soft makeup, including bold lashes, rosy cheeks and a dewy pink lip tint.

After the event, she shared a post with her 749,000 followers on Instagram, captioning the two photos: 'Sunset Blvd ❤️ date, opening night.'

In one image, the future Mrs. Bezos poses on a luxurious burgundy ottoman inside what appears to be a luxury wardrobe.

The star also shared a close-up snap of her St James's Theater poster flyer and tagged the musical's official social media account.

The production, starring Nicole Scherzinger, 46, grossed more than $1.08 million in its first week from six previews earlier this month.

The critically acclaimed musical runs approximately two hours and 35 minutes and is based on Billy Wilder's film about silent film star Norma Desmond.

“Little Nicole has been waiting for this her whole life,” Scherzinger wrote on Instagram in September.

Gotta do it with this beautiful cast @sunsetblvdmusical and these two heroes of mine @andrewlloydwebber @jamielloyd.'

Lauren took to Instagram after the event to share a post with her 749,000 followers.

Lauren took to Instagram after the event to share a post with her 749,000 followers.

She captioned two Instagram photos: 'Date night, Sunset Blvd opening night ❤️'

She captioned two Instagram photos: 'Date night, Sunset Blvd opening night ❤️'

The star shared a flyer of his St James's Theater line-up.

The star shared a flyer of his St James's Theater line-up.

Sunset Boulevard, starring 46-year-old Nicole Scherzinger (pictured), grossed more than $1.08 million in its first week of six previews earlier this month.

Sunset Boulevard, starring 46-year-old Nicole Scherzinger (pictured), grossed more than $1.08 million in its first week of six previews earlier this month.

Other famous faces on opening night included Brooke Shields, Jessica Chastain and Sarah Hyland.

Scherzinger's musical comeback was considered a success by Daily Mail critic Luke Jones, who gave it five stars.

Jones praised: “The classically romantic score remains, melting into a somewhat confusing plot about a lonely and deluded silent film star who ensnares a young writer named Jo so she can polish her comeback script.” In two and a half hours she loses her mind and he loses his life.

'Director Jamie Lloyd, who has been working on his revival of the moody, broken-back genre for years, has finally hit the mark. No extravagant costumes or complicated sets. Live camera work, a big star and an even bigger band.'