The short video has gone viral since it was posted yesterday.
Ms Heremaia told the Herald she was shocked at how popular the video had been, saying it was "by far the most responded to and relatable" video she had ever made.
Many comments on social media echoed her frustrations, saying they too struggled to find a nice looking bra for a reasonable price.
"People are actually really passionate about this," she said.
"It's the cost that comes into play. If you want a nice bra you're generally paying $80 to $100. I think it's a feel good factor to wear nice bras and nice undies."
Ms Heremaia hoped bra companies might get wind of the video's popularity and take the messages in it on board.
"Hopefully they'll take notice and notice and consider what I've said about nice bras for bigger boobs," she said.
The ideal outcome would be getting to design a bra herself for a company she added, laughing.
It has been reacted to on Facebook eleven thousand times, shared nearly 3000 times and viewed more than 300,000 times.
The 20-year-old also took issue with the lack of choices for those with large breasts.
"Look at this one, it's nice, nice, nice; but it's a 12B," she says at one point.
"Sort your shit out, bra companies. I'm really done with the black, cream and white bras, I want pretty bras that don't cost hundreds of dollars."
LANGUAGE WARNING