The University of Central Lancashire fashion promotion student won the Bonmarche Fashion for All Award.
Caroline, 22, won with the ‘GUESS Peachy’ campaign, in which she created a range of jeans for curvy women.
She said: “I can’t believe I’ve won such a fantastic award.
“It means so much and it a great way to end my time at UCLan. I feel all my hard work has finally paid off.
“I developed a unique concept not currently on the market called ‘waist-to-hip technology’, which is something that the judges said they were ‘blown away’ by.
Entrants had to submit a body of work reflecting how attitudes to fashion design have changed, with fewer restrictions around age, size and shape.
Caroline has already been offered a job in the fashion industry, working as a graphic designer for global online footwear brand Public Desire.
She did her year-long work placement with the company, where she started as a marketing assistant.
Fashion promotion lecturer Eve Astle added: “The judges had wonderful comments endorsing their choice and we couldn’t agree more.”