And for the American Idol finale, Jennifer Lopez dazzled the crowd with a cover of Rihanna’s Diamonds and a barely-there glitter gown.

The 45-year-old’s garment flirted with the imagination as she performed the pop track with co-judges Keith Urban, 47, and Harry Connick Jr., 47, on Wednesday.

Putting on a show! Jennifer Lopez dazzled the crowd at the American Idol finale with a cover of Rihanna’s song Diamonds

Jennifer assumed control of a glittering microphone as Keith strummed his guitar and Harry sat behind a piano.

While her co-stars appeared to coordinate with their matching black attire, Jennifer upped the glam factor with her sparkling dress and large hoop earrings.

Her hair fell down in a straight and glossy ‘do, and her radiant face glowed with heaps of smoky eye shadow.

Stealing the show: The 45-year-old singer wowed in a barely-there semi-sheer gown

Not alone: J.Lo was joined on stage by fellow judges Harry Connick Jr. and Keith Urban

Bold move: The dramatic number highlighted the star’s toned curves in all its glory

Cheeky! The star delighted her loyal fans with both her vocals and her aesthetic

Doing her thing: The singer powered through some of her high notes during the live gig

Very pleasing: The stars got the glittering crowd to their feet with their performance

After Jennifer’s soulful take on the pop song, the atmosphere livened up to the tune of Bruno Mars’ song Locked Out Of Heaven.

The Boy Next Door actress joined into the song after Keith belted out the initial lyrics.

Jennifer and Keith’s talent continued to shine throughout the night.

While Keith performed Even The Stars Fall For You, Jennifer at one point traded in her gown for a short black mini to sing Back It Up with Pitt Bull and Prince Roy.

A host of scantily clad back-up dancers paraded beside Prince Roy as he sang his brand new single.

Pitt Bull joined in his signature uniform of beige slacks, a handsome blazer, and sunglasses.

Dream team? The superstar and Keith perfected their harmonies together for audience

Passionate: The Waiting For Tonight songbird had a deep in her facial features

Sharing the spotlight: After Jennifer performed Diamonds, Keith opened up a cover of Bruno Mars’ song Locked Out Of Heaven

Coming through: Jennifer happily strutted her lean and slender frame on stage

Diamonds: J-Lo worked her magic while Keith strummed the strings of his guitar

Soulful: Jennifer was clearly putting her all into the stirring performance

Moment of truth: Harry remained seated at the back of a Baby Grand piano

Showing what they’ve got: The judges happily joined forces for the series finale

All together now: Jennifer and Keith belted out the lyrics to the 2012 pop hit

Doing her thing: Keith happily let the songstress take centre stage

Showing what he’s got! Keith also performed Even The Stars Fall For You

There was no shortage of star power the night of the American Idol finale.

Former judge Steven Tyler performed Love Is Your Name, and even sang the classic song Piece Of My Heart with contestant Jax.

Fall Out Boy jumped onto stage to belt out Centuries with finalists Nick Fradiani and Clark Beckham, while Jamie Foxx serenaded the audience beside contestant Rayvon Owen.

New Kids On The Block also made an appearance, while Janelle Monae wore a gold tiara as her team of back-up dancers grooved to the beat.

That night handsome rocker Nick beat out Clark and was named the next American Idol.

Here she comes: Jennifer looked flawless in a stunning black lace gown as she made her grand entrance

Fan friendly: The mother-of-two happily greeted some of her loyal fans

A beauty: With her long blonde locks tied up, the singer drew attention to her facial features with well-defined eyes and a slick of pink lipstick

But first… the American star stopped to take a selfie on her phone

Passion: Jennifer performed Prince Royce’s latest single Back It Up alongside Pitt Bull

Sultry: The singer nuzzled her nose against the heartthrob

Showing what she’s got! The singers grooved to the tune of the music as a bevy of back-up dancers frolicked beside them

And after being lost for words to describe his feelings at winning, Nick had to halt his performance of his debut single to instead run into the crowd and hug and kiss his family.

The Adam Levine-lookalike from Guildford, Connecticut, had perhaps gone into the final as favorite, at least for the judges who had been harsher with their comments aimed at Clark during the season.

But in front of a live audience that including Hollywood superstar Nicole Kidman and former Idol judge Steven, Nick seemed clearly overwhelmed as his name was read out as the winner.After being swarmed by the other contestants from season 14, host Ryan Seacrest asked for his reaction and Nick admitted: ‘I can’t even think right now.’

Rock on! Steven Tyler jumped onto stage in a festive ensemble

Wowing the crowd: The rock star was clearly in the moment as he belted into the microphone

Her time to shine too! Former contestant Jax jumped in to sing as well

What a show: He was warmly greeted by Miss Lopez, who was standing by the stage

Beaming: The star certainly appeared to be in his element

Stirring: Jamie Foxx and contestant Rayvon Owen shared the spotlight for a soulful song

All eyes on him: Jamie was poised as he sat behind the piano in a sharp suit

Livening up the show: Fall Out Boy belted out beside finalists Clark Beckham and Nick Fradiani

Taking the stage: New Kids On The Block had the audience in the palm of their hand as they took centre stage

Wowza: Janelle Monae wore a gold tiara as she performed beside her team of back-up dancers