They usually spend their days promoting trendy brands on social media. 

But some of 's hottest influencers used their fame for good on Sunday by attending a charity event run by the Starlight Children's Foundation. 

Married At First Sight bride joined the likes of star Sophia Begg (also known as her online moniker Sopha Dopha) to break the world record for making the longest ever Nutella pizza. 

Olivia swapped her usual glamorous attire for the event's official T-shirt paired with denim shorts and casual white sneakers. 

She wore her blonde locks back in a low bun and accessorised with hoop earrings and a pair of sunglasses perched on her head.

MAFS bride Olivia Frazer (pictured) used her fame for good by attending the Starlight Children's Foundation's 'world's longest Nutella pizza' charity in Sydney on Sunday 

Sophia also wore the event's T-shirt, matched with a pair of dark blue denim cut-offs and brown leather shoes. 

The online model slicked her hair back into a low bun parted in the centre and completed her look with gold hoop earrings and a matching bangle. 

Also attending was Blue Wiggle Anthony Field's daughter Lucia and Purple Wiggle John Pearce, who pulled some animated poses together next to the pizza dough.

Sophia Begg (also known as her online moniker Sopha Dopha) also attended the event 

Sophia also wore the event's T-shirt, matched with a pair of dark blue denim cut-offs and brown leather shoes

Other notable guests included Sunrise sports host Mark Beretta and the 2022 winners of My Kitchen Rules, Janelle Halil and Monzir Hamdin. 

The event took place at Sydney's Five Dock and was held to raise money for the

 Starlight Children's Foundation, a charity that aims to brighten the lives of seriously ill children. 

Participants smashed the world record by making the 100-metre-long Nutella pizza, overtaking the previous record held by Crust Gourmet Pizza Bar in Broadbeach for their pie at 46.6 metre long pie. 

Fans attending the show were served over 4000 free slices of Nutella pizza as part of the effort. 

Also attending was Blue Wiggle Anthony Field's daughter Lucia (left) and Purple Wiggle John Pearce (right), who pulled some animated poses together next to the pizza dough

The event took place at Sydney's Five Dock and was held to raise money for the Starlight Children's Foundation, a charity that aims to brighten the lives of seriously ill children

Participants smashed the world record by making the 100-metre-long Nutella pizza, overtaking the previous record held by Crust Gourmet Pizza Bar in Broadbeach for their pie at 46.6 metre long pie