Lily Collins sports Justin Bieber T-shirt as she joins Hilary Duff and Katherine Schwarzenegger to turn Beliebers for the singer's star-studded LA concert

By Ciara Farmer For Mailonline

Published: 05:31 EST, 22 March 2016 | Updated: 06:45 EST, 22 March 2016

Justin Bieber's fan base has recently gone from screaming tweens to dedicated music lovers.

As the star staged a date on his Purpose World Tour at the Staples Centre in Los Angeles on Monday is was a who's who of stars, including Lily Collins, Hilary Duff and Katherine Schwarzenegger.

The trio of superstars put on extremely glamorous displays for their night of tunes, although Lily showed the most support as she rocked a Bieber merchandise T-shirt. 

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Glamorous girls: As Justin Bieber staged a date on his Purpose World Tour in Los Angeles on Monday is was a who's who of stars, including Lily Collins, Hilary Duff and Katherine Schwarzenegger

Lily looked incredibly cool for her night on the town, where she was flying the flag for the Baby hitmaker by rocking his face in a black and white portrait on her T-shirt. 

She topped off the monochrome tee with a coordinating shearling lined biker jacket with a leather outer while she topped off the edgy look with black skinny jeans. 

The Mirror Mirror actress paired her tongue-in-cheek look with a pair of stylish black pointed ankle boots which she flaunted as she draped her arm around a pal while giggling down the street. 

In-keeping with her grungey look, her previously lengthy locks were cut into a choppy, short style falling from a centre parting, while she kept her make-up simple and stylish. 

I'm a Belieber! The trio of superstars put on extremely glamorous displays for their night of tunes, although Lily showed the most support as she rocked a Bieber merchandise T-shirt

I'm a Belieber! The trio of superstars put on extremely glamorous displays for their night of tunes, although Lily showed the most support as she rocked a Bieber merchandise T-shirt

An interesting choice: Hilary meanwhile went for a rather bizarre ensemble comprising of white sports shorts, which looked as though they may have been appropriate for basketball, paired with a relatively dressy top half

Hilary meanwhile went for a rather bizarre ensemble comprising of white sports shorts, which looked as though they may have been appropriate for basketball, paired with a relatively dressy top half. 

She gave a glimpse of ample cleavage with her scoop neck black top while topping things off with a black, leather biker jacket and black ankle boots. 

Her blonde hair was partially shielded beyond a chic grey fedora while she pulled an across the body bag over her shoulder. 

Hats off to you: She gave a glimpse of ample cleavage with her scoop neck black top while topping things off with a black, leather biker jacket and black ankle boots

Hats off to you: She gave a glimpse of ample cleavage with her scoop neck black top while topping things off with a black, leather biker jacket and black ankle boots

Hand in hand: Hilary's blonde hair was partially shielded beyond a chic grey fedora while she pulled an across the body bag over her shoulder

Hand in hand: Hilary's blonde hair was partially shielded beyond a chic grey fedora while she pulled an across the body bag over her shoulder

Covering up: Katherine, daughter of actor and politician Arnold Schwarzenegger, appeared to be baring a little more than she intended as she wrapped her arms around her body

Covering up: Katherine, daughter of actor and politician Arnold Schwarzenegger, appeared to be baring a little more than she intended as she wrapped her arms around her body

Katherine, daughter of actor and politician Arnold Schwarzenegger, appeared to be baring a little more than she intended as she wrapped her arms around her body. 

She flashed the fact that she had opted to bra-free through the low-cut split of her black vest while rocking edgy ripped jeans. 

Completely bringing the ensemble to a casual edge, she wore Converse trainers with the look. 

Her hair and make-up were flawless, with her glossy brunette locks shimmering and her heavily outlined eyes standing out against her tanned complexion. 

Other stars to turn out for the big concert included Kim and Kourtney Kardashian, Kanye West and Hailey Baldwin. 

Justin has embarked on his huge world tour which kicked off in Washington at the start of the month and wraps up in London in November.  

Putting up her guard: Katherine flashed the fact that she had opted to bra-free through the low-cut split of her black vest while rocking edgy ripped jeans


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