The shopping giant decided to use Thea Lauryn Chippendale's picture to advertise the blush pink lace dress on its website after she shared a troll's nasty messages on Twitter.
A stranger had told her that her dress looked like a "charity shop job" during a chat on the popular dating app.
Posting pictures of the exchange online earlier this week, she wrote: "Men are trash."
Men are trash. (Included the pic he’s on about 🙃) pic.twitter.com/3pi6NHl0Oy— Thea Lauryn Chippendale 🌹 (@theachippendale)April 28, 2019
Ms Chippendale had received a message from a man named George about one of her photos on her Tinder profile.
"Not gonna lie you’re a bit of a joke, but that dress in the last photo is not doing any favours," he wrote.
Ms Chippendale replied: "Excuse me?"
"You heard!" said George.
— ASOS (@ASOS)May 2, 2019
Hitting back at him, Ms Chippendale retorted: "Why did you feel like you needed to comment on it? Is you head that far up your own a*** that you thought your opinion mattered?"
But he continued to insult her, writing: "Literally had to tell you else I wouldn’t have slept. It’s awful you not reckon?
"Charity shop job! I tell you what… GROW UP! And shop somewhere decent! Thanks. Hope this helps."
Ms Chippendale's tweet about the exchange quickly went viral online and has since attracted more than 100,000 likes and nearly 8,000 retweets.
The ASOS Twitter account was among those to respond to her tweet, telling her to check her DMs.
She has now been made a model on the website for the £74 ASOS Design dress.
ASOS tweeted alongside her picture: "Swipe right to see who had the last laugh."