Dianna Agron is retro chic in Fifties-style frock and elegant updo as she heads to dinner with friends

She was seen getting ready to rock out in an all black outfit at a Jack White concert last week.

But Dianna Agron has proven she is quite the style chameleon.

The 28-year-old star donned an elegant Fifties-style dress as she arrived for dinner at Cecconi's Restaurant in West Hollywood on Monday evening.

Blonde beauty: Dianna Agron, 28, was spotted arriving for dinner  at Cessoni's Restaurant in West Hollywood on Monday evening donning quite an elegant ensemble

Blonde beauty: Dianna Agron, 28, was spotted arriving for dinner  at Cessoni's Restaurant in West Hollywood on Monday evening donning quite an elegant ensemble

Dianna looked chic in the sleeveless violet and white patterned midi-dress while making her way into the Italian restaurant.

The blonde beauty matched the frock with a violet clutch featuring mirrored detailing and wore a pair of beige heels for the outing.

She had her signature blonde locks in a fancy updo and upped the glamour further with crimson lips.

Dignified at dinner: The actress looked chic in a sleeveless violet and white patterned mini-dress while holding onto a matching clutch

Dignified at dinner: The actress looked chic in a sleeveless violet and white patterned mini-dress while holding onto a matching clutch

Elegant: Dianna had her blonde locks in an updo and wore natural make-up on her face highlighted by red lipstick as she dined at the Italian restaurant

Elegant: Dianna had her blonde locks in an updo and wore natural make-up on her face highlighted by red lipstick as she dined at the Italian restaurant

The ensemble was a far cry from the black kimono covered in exotic white designs she donned at the Jack White gig in Los Angeles last week.

The Glee star also sported a lacy black nightie style dress, black tights and black ankle boots, while carrying a studded black purse with a chain strap.

She seemed to have a good time at the concert as she took to Twitter to rave about the show on Wednesday morning.

Back in black: She donned a much different ensemble as she caught a Jack White concert in LA last week featuring a black kimono covered in exotic white designs over a lacy black nightie style dress

Back in black: She donned a much different ensemble as she caught a Jack White concert in LA last week featuring a black kimono covered in exotic white designs over a lacy black nightie style dress

She shared with her nearly two million followers: ‘It's morning now but all I can think about is JACK WHITE last night. Not the first time not the last, can't get over him as a performer.’

Though Dianna has been seen solo in recent days, she's rumoured to be dating actor Thomas Cocquerel.

She reportedly spent 10 days recently in Sydney with NIDA graduate and rising star Thomas.

Smitten: The 28-year-old actress tweeted the next morning, 'It's morning now but all I can think about is JACK WHITE last night. Not the first time not the last, can't get over him as a performer'

Smitten: The 28-year-old actress tweeted the next morning, 'It's morning now but all I can think about is JACK WHITE last night. Not the first time not the last, can't get over him as a performer'

Finishing touches: The Glee star also sported black tights and black ankle boots, while carrying a studded black purse with a chain strap

Finishing touches: The Glee star also sported black tights and black ankle boots, while carrying a studded black purse with a chain strap

Dianna and Thomas were seen smooching at the Coachella music festival and were later photographed strolling through the streets of Hollywood with their arms wrapped tightly around one another.

It seems clear that the beautiful blonde has moved on after she ended her five-month relationship with Australian restaurateur Nick Mathers in February.

Budding romance: She is rumoured to be dating Thomas Cocquerel as the two were photographed strolling through the streets of Hollywood with their arms wrapped tightly around one another back in April

Budding romance: She is rumoured to be dating Thomas Cocquerel as the two were photographed strolling through the streets of Hollywood with their arms wrapped tightly around one another back in April