Leggy Hailee Steinfeld cuts an elegant figure in chic ruffled jumpsuit... before rocking embellished minidress for energetic performance on The Tonight Show

She is currently on a whirlwind promotional tour for Pitch Perfect 3. 

And Hailee Steinfeld looked radiant as she joined Jimmy Fallon on the sofa on The Tonight Show on Thursday.

The 21-year-old actress showed off her incredible physique in a monochrome jumpsuit before slipping into an embellished minidress as she took to the stage to perform her single Let Me Go. 

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Stunner: Hailee Steinfeld looked radiant as she joined Jimmy Fallon on the sofa on The Tonight Show on Thursday

Stunner: Hailee Steinfeld looked radiant as she joined Jimmy Fallon on the sofa on The Tonight Show on Thursday

Fashionista: The stunner then slipped into an embellished bronze minidress with fishnet tights as she took to the stage

Fashionista: The stunner then slipped into an embellished bronze minidress with fishnet tights as she took to the stage

Sparkle this party season in a sequin dress from Halpern

Hailee Steinfeld took to the stage on the Tonight Show this week and she had gone all festive on us in this super sparkly number that had us at first glance (and our purse's)!

This dress with an ombré style sequin design and fabulously flared sleeves is a piece of shiny shimmering goodness we just have to have for the party season. As for the high neck - it balances out that sexy short hemline.

This cool mini is by Halpern who do a whole array of sparkling dresses. Sadly this exact one is sold out, but click right to shop it in an alternative colourway.

Want to look sassy in sequins like Hailee? Head to the edit of similar options below from Miss Selfridge, Little Mistress and more.

* PRICES MAY NOT BE AS ADVERTISED

The stunning starlet showed off a hint of cleavage in the elegant ensemble, which featured cut-out shoulders and tailored black trousers. 

She cinched in her waist with a black leather belt and added a boost to her height with a pair of black Louboutin heels. 

The Most Girls hitmaker styled her long brunette tresses in soft waves and accentuated her natural beauty with a dramatic smoky eye and a glossy pink lipstick.

Strutting her stuff: The 21-year-old actress showed off her incredible physique in a monochrome jumpsuit before slipping into an embellished minidress as she took to the stage to perform her single 'Let Me Go'

Strutting her stuff: The 21-year-old actress showed off her incredible physique in a monochrome jumpsuit before slipping into an embellished minidress as she took to the stage to perform her single 'Let Me Go'

Chatting to Jimmy, the True Grit star revealed how she celebrated her 21st birthday.

She said: 'My friends and family actually surprised me with a beautiful dinner it was pretty low key but I enjoyed it.'

When asked by the chat show host if she indulged in an alcoholic beverage, she revealed: 'I sure did. I was actually pretty pumped about ordering one and I got the drinks menu and I had no idea what to order. 

'I didn't really know what any of it was so I left my family to order me a drink and it was a Moscow Mule.'  

Mysterious: Hailee who plays Emily Junk in Pitch Perfect triology revealed it may 'not be entirely over for the Bellas'

Mysterious: Hailee who plays Emily Junk in Pitch Perfect triology revealed it may 'not be entirely over for the Bellas'

The stunner then slipped into an embellished bronze minidress with fishnet tights as she took to the stage. 

Hitting all the right notes, the songstress paired her glitzy ensemble with knee high boots as she joined Alesso and Watt to perform their collaborative single 'Let Me Go'.

Hailee who plays Emily Junk in Pitch Perfect triology revealed it may 'not be entirely over for the Bellas'. 

Taking to the stage: Hitting all the right notes, the songstress paired her glitzy ensemble with knee high boots as she joined Alesso and Watt to perform their collaborative single 'Let Me Go'

Taking to the stage: Hitting all the right notes, the songstress paired her glitzy ensemble with knee high boots as she joined Alesso and Watt to perform their collaborative single 'Let Me Go'

In an interview with BUILD earlier this month, Hailee revealed Pitch Perfect 4 could be on the cards, saying: 'Maybe. I don't know anything for sure, but I don't know it's entirely over for the Bellas.'

The starlet admitted the trilogy may be extended following the release of the Pitch Perfect 3.

Hailee has gone from strength to strength after being nominated for an Oscar at the age of fourteen for her role in True Grit, with aspirations to be a nominee again. 

She added: 'I realise it way more now, than I did then, what an incredible honour it is. I can only hope and work as hard as I can to have it happen again.'

Despite her international fame, the humble star told BUILD she still gets nervous when meeting Hollywood legends.

'Just everyone. Even when you follow people and you see their team on their Instagram and what not, and you're like, 'Oh my god, that's that person's make up artist, they must be here. They're in the building!' - I'll freak out for sure,' she said.

Keeping the door open: The starlet admitted the trilogy may be extended following the release of the Pitch Perfect 3

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