The young woman, from Carmyle, in Glasgow's East End, has already run a successful market stall at the Barras.
Now she has opened her own shop selling second-hand clothes, which is a treasure-trove of designer finds.
But J'adore La Mode isn't in the traditional vintage trawling spots in the West End, but at Parkhead Cross in the East End of Glasgow.
Kerrie said: "People love it because there's nothing like this around here. On our first day we were absolutely mobbed, and I had to restock. It's going really well."
With Kerrie's mantra "Life is a fashion show, The World is your runway" pasted on the wall in gold, as well as flock wallpaper and a chaise longue providing a boudoir feel, it brings a new shopping destination to the East End.
Kerrie was just 12 when she started selling clothes at car boot sales out of a suitcase, when her mum Karen, 49, told her that if she wanted pocket money, she had to go out and earn it.
Kerrie, said: "My mum always said if I wanted money I had to go and get it myself. I've always loved clothes. If I made over £100 I would get myself a pair of jeans."
Kerrie admits earning money gave her a boost – and she soon juggled working with going to Notre Dame High School.
She also found people were constantly asking where she bought her outfits from – and always revealed they were bargains.
She said: "Today I've got my Zara bag worth £160 which I picked up at a charity auction for £15 and I've got a real Burberry jacket for £20 at The Barras. It was a great buy. Everything I wear is second hand."
But what started as a necessity soon became a love and a vocation, and Kerrie went on to study fashion technology at Cardonald College.
She then took on her own market stall, which she ran for a year at The Barras. Called Second Look, she spent week days hunting out clothes to sell, with the help of her mum.
Kerrie said: "Last summer I was working car boot sales and I was fed up of paying other people's rent. One day I said 'I'm going to open my own wee stall.' If it wasn't for my mum I couldn't have done it.
"I go everywhere to find stock – London, Yorkshire, even Paris, auctions, charity shops and boot sales all over the UK."
Finally, at the end of August Kerrie, who has a sister Donna Marie, 29, and brother Gerard, 27, achieved her dream of having a shop. She sells vintage, second-hand and new clothes and accessories, with clothes starting from £15 and the most expensive dresses priced at £100.
Many still have their original labels attached. Names include Lipsy, Max C London, Karen Millen, Zara, Nine West, Wallis, and Marks and Spencer.
Highlights on sale include cream vintage Prada point-toe shoes in a size 40 for £20, a red dress by Diana Vickers for Very also priced at £20, and a show-stopping cream gown from Bare Necessities for £100.
Kerrie said: "This is my dream, I can't believe its becoming a reality. You see so many people with the same stuff and I always love to be different. I don't like being a sheep. I love individuality."
Mum Karen said: "I'm really proud of her. She's always been into clothes. It used to drive me mad giving her £5 to buy Vogue. She used to dress her Barbies up, and she used to go to school in a beret and knee high socks. "
Ja Adore La Mode is at 1438 Gallowgate, Parkhead Cross