So the 33-year-old began a mission to give youngsters the same choice of fashionable second-hand clothes that is available to adults.
The San Francisco-born graphic designer settled in Glasgow with husband Richard - drummer with indie band Belle & Sebastian - around two years ago when she was seven months' pregnant.
It was then she had the idea to collect vintage baby clothes.
In April this year, Jolyne opened Rowdy Roddy Vintage in Partick, which stocks second-hand and locally sourced pieces for newborns to 14-year-olds.
From Run DMC babygros and denim dresses to vintage Harley Davidson T-shirts and 1960s shoes, the store is a treasure chest packed full of outfits and toys priced from £6-£250.
Jolyne said she started collecting pieces for both sexes because she didn't know she was having a boy.
She said: "When I was pregnant I couldn't find anything I really loved in the shops. So I was just hunting for different baby shops.
"I didn't know what I was having so I had a pile of girl and boy stuff.
"When I had my little boy, I still couldn't stop collecting it. It's fun and exciting to find it."
Jolyne started out with a stall at the Granny Would Be Proud vintage and craft fair, held at Hillhead Bookclub, in April 2012.
"I was bringing Roddy with me," she said.
"I would dress him up in vintage, like little sailor outfits, and get him a little high chair.
"He was just seven months old at that point. It went really well."
However, because of the effort it took to set up the stall and take it down she began searching for a more permanent base.
She moved in to a space in De Courcy's Arcade in Cresswell Lane soon after.
She said: "The effort it was taking to get everything ready and take him was becoming harder. It's really draining to set up, take it down, take it home.
"So having the De Courcy's space was the perfect set-up because we had it all the time."
Jolyne found the Partick boutique, in Dowanhill Street, at the start of the year.
She picked the shop because of its location next to Kelvinhall subway station and across from The Sparkle Horse, a venue which holds baby discos.
Jolyne said: "It was the right location for us. I have a computer at the back of the shop where I can do freelance graphic design and it's a big space."
Jolyne found a lot of her extensive collection while on tour with her husband, who also does percussion with Snow Patrol.
She said: "I bring huge amounts back from the States.
"When I go visit my family I sacrifice my luggage and fill up on baby things.
"Sometimes I go with my husband on tour and I hunt so I have pieces from Paris, Amsterdam and Spain."
She also uses local designers such as Little Legs Kilts.
She said: "A lot of the designers I buy in from are the ones I met at Granny Would Be Proud.
"I love the little kilts."
Jolyne says she has always been a fan of wearing vintage clothing - but doesn't have the time to search for it as a busy mum.
She said: "My family is Latino, my dad's from Costa Rica, so I've always been really attracted to Latin style.
"I like to put my hair up with flowers. I also love that San Francisco style - lots of 1970s vintage and Harley Davidson."
However, Jolyne will be finding the time to search for a vintage dress to wear for the finals of the Mumprenuer awards, being held later this month.
She is a finalist in the Best Green Business and the Inspirational Business Mum awards.
Jolyne is also heading to the Baby and Toddler show in Liverpool early next year.
She said: "I want to keep building up my collection and letting people know where the shop is.
"There are lots of new and expectant families so I think there will be a whole new generation who will be interested in the shop."