Winning them over! Jaimie Alexander treats fiancé Peter Facinelli's daughters to a day of shopping fun

She will soon be their stepmother.

And on Saturday Jaimie Alexander got a head start to the role of doting mom when she pampered her fiancé Peter Facinelli's daughters to a day of shopping.

The 31-year-old smiled in delight as she spent some quality time with 12-year-old Lola and eight-year-old Fiona in West Hollywood.

Winning them over! Jaimie Alexander smiled in delight as she shopped with her fiancé Peter Facinelli's daughters Lola, 12, and Fiona, eight, in West Hollywood on Saturday

Winning them over! Jaimie Alexander smiled in delight as she shopped with her fiancé Peter Facinelli's daughters Lola, 12, and Fiona, eight, in West Hollywood on Saturday

Too-cool for school Jaimie Alexander styles 'Ginsburg is God' sweater

Bella Freud designed this merino wool sweater after acting in Hideous Man, a film written and directed by John Malkovich in 2002.

Inspired by poet and member of the beatnik generation Allen Ginsburg, this sweater has all the glamour of a hot nerd.

Jaimie Alexander shows she's cooler than the rest by sporting this jumper.

Although, it's ironic that a man who opposed capitalism so profusely and did not believe in a singular God has a sweater in his name, claiming he is God.

Nevertheless, if you like Jaimie's sweater you can buy it by clicking to the right on Net-A-Porter.com. Or choose from our picks below.

Throw on a similarly witty sweater, some fake glasses and we'll have you looking equally like a hippie intellectual in no time.

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Jaimie was styled to perfection in tight black trousers and a matching sweatshirt that read Ginsberg Is God. 

The Kyle XW star finished off her look with a pair of oversized basketball trainers, as well as sharp glasses.

Jaimie clutched two shopping bags as she safely guided the girls across the street.

Watch your step! Jaimie safely guided Peter's girls across the street

Watch your step! Jaimie safely guided Peter's girls across the street

Sweet tooth! Fiona was treated to a tasty fruit smoothie in addition to a shopping splurge 

Sweet tooth! Fiona was treated to a tasty fruit smoothie in addition to a shopping splurge 

Upbeat: The 31-year-old gazed down at Fiona while clutching her newly purchased goods
Upbeat: The 31-year-old gazed down at Fiona while clutching her newly purchased goods

Upbeat: The 31-year-old actress gazed down at Fiona while clutching her newly purchased goods

Fiona wore a Princess Charming T-shirt and treated herself to a tasty fruit smoothie.

Her sister sported a summery white eyelet dress that she teamed with a red flannel shirt and white sneakers.

Clearly relishing every moment from her bonding session, Jaimie at one point appeared to succumb to a fit of giggles as she watched Lola.  

Making a statement! Both the Thor actress and Fiona wore statement tops

Making a statement! Both the Thor actress and Fiona wore statement tops

Changing her life: The actress told People in May how Peter and his children 'have made me a better person'

Changing her life: The actress told People in May how Peter and his children 'have made me a better person'

The outing comes two months after Jaimie discussed how Peter has transformed her life for the better. 

'He's really changed my life. Him and his children have made me a better person,' she told People Magazine after saying how she can't wait to 'spend every day' with the American Odyssey star.

Though, the pair have yet to plan their big day due to their hectic schedules.

Giggle fit! Alexander appeared to be laughing at Fiona's antics

Giggle fit! Alexander appeared to be laughing at Fiona's antics

'We're just having fun, and we just take life in stride, and we're having fun being engaged and just enjoying life,' the star said.

Peter was married previously married to Jennie Garth from 2001 to 2013.

Together, the pair are parents to daughters Luca, 17, Lola, and Fiona.

Fun with flannel! Lola added a splash of colour to her look with the bright red top

Fun with flannel! Lola added a splash of colour to her look with the bright red top

The actor began dating Jaimie in 2012, and recently confirmed they were engaged in March. 

Jennie has also moved on since they split and is currently engaged to David Abrams - who popped the question in April.  

Meanwhile, Jaimie has a number of projects yet to come, including a starring role in the TV series Blindspot, which will premiere this fall on NBC.

Love is in the air! Peter Facinelli kissed his bride-to-be in New York in May

Love is in the air! Peter Facinelli kissed his bride-to-be in New York in May

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