Banish those baby cost blues for good
She says: "You don't know anything about what's ahead, so if you see a car seat or a buggy that says 'this is the safest', you want it – hang the cost.
"I think an element of working parent guilt can also come into it.
"You spend money on buying them 'the best' because you're worried about not being there all the time."
The internet has also played its part.
Dublin mum-of-two Isabelle Charmant (right) says: "If all the advice says you have to buy a brand-new mattress for every baby you're not willing to go against that. The more knowledge we've access to, the more we doubt and second guess."
But both mums agree it's hard not to be taken in by the wealth of beautiful baby products now available, especially when pregnant.
"You've spent three months not being able to tell anyone while secretly looking at baby clothes in shop windows; you're dying to go mad!" says Gillian.
Gillian and Isabelle have set up a website, Jasper & Jane (jasperandjane.com) last December to help parents copy the designer looks.