Mommy's off duty! Ali Larter goes hell for leather in tight trousers as she gets back on the Hollywood party scene

By Leah Simpson

PUBLISHED: 09:28 EST, 22 March 2013 | UPDATED: 09:28 EST, 22 March 2013

She is often seen out and about playing doting mother to her adorable son Theodore.

But Ali Larter unleashed her inner party girl on Thursday night as she visited the trendy Chateau Marmont in West Hollywood, California.

The 37-year-old looked in great spirits as she donned a pair of high-waist leather trousers with her sheer white top tucked in on one side to show off her zip fastening pocket feature.

Hell for leather: Ali Larter was seen wearing black leather pants while leaving the swanky Chateau Marmont Hotel in West Hollywood, California on Thursday

She teamed it with an open denim shirt, rolling the sleeves up for a relaxed style but donning heeled black ankle boots to step up her fashion credentials.

The blonde seemed to be in high spirits as she carried a purple bag on her arm, smiling as she walked into the breezy outdoors that evening with her mobile phone in hand.

Clearly having had a great time, she tweeted: ‘Nothing beats a night at chateau marmont.’

All smiles: The blonde left the venue looking rather happy as she teamed her trousers with a denim shirt and maroon bag

It would have made a nice change from looking after her two-year-old son, whom she has with comedian husband Hayes MacArthur, 35.

Just the day before she had written on Twitter about needing a fun night on the town and it looks like her wishes were granted.

She posted on the micro-blogging site on Wednesday: ‘Websites, blogs, media platforms, licensing, branding, help! I'm just a girl who likes a good party.’

Back to mommy duties? She teamed her pieces with heeled ankle boots and carried her phone in her hand as she headed home

This year the actress has three movies coming out.

She will appear in You’re Not You, a drama centered on a terminally ill woman and the aimless young lady who becomes her caregiver. 

She also has a part as Crystal in Legends, a film which follows a deep-cover operative named Martin Odum, who has an uncanny ability to transform himself into a different person for each job. 

But his own identity comes into question when a mysterious stranger suggests that Martin isn't who he thinks he is.  

Lastly the star will appear in Lovesick alongside actors including Chevy Chase and Matt LeBlanc.

Doting parents: Ali and her husband Hayes MacArthur are parents to two-year-old son Theodore