Mrs Scott-Walker sent both women LoveLoops jewellery to symbolise the recent births of their first offspring.
And when it came to the former Kate Middleton, there was no question which metal loop to dispatch to Clarence House in London.
''It's gold. You can't send a princess a silver one,'' she said.
On one side, she had Prince George's full name and birth date engraved and, on the other, HRH Prince George of Cambridge.
Admitting to being ''a bit of a royalist'', she hoped that the gift would make its way to the Duchess of Cambridge and that she would love it.
''I hope it's engraved with what she would put on there,'' she said.
Describing Kim Kardashian as American royalty, she sent the reality television star a LoveLoop at the insistence of her younger stepsister.
With Kardashian and Kanye West's infant daughter named North West, Mrs Scott-Walker could not resist turning the LoveLoop into a ''compass'', marking north, south, east and west and putting ''a wee star'' at the northwest point.
The idea of LoveLoops was born when Mrs Scott-Walker (35) was pregnant with second daughter Eden, who was born in 2011.
She wanted something that she could wear to represent both Eden and elder sister Esme and her bond with them.
While she did a lot of searching on the internet, much of what she found was ''tacky'' or ''crafty'', which she did not want.
An idea began forming of a high-quality, classy piece of jewellery and when Eden was about 4 months old, she approached a manufacturing jeweller to have the first LoveLoops made.
When she began wearing her own, engraved with her daughters' names and their birth dates, people started wanting them.
LoveLoops were crafted in solid sterling silver and solid 9-carat gold and Mrs Scott-Walker worked with manufacturing jeweller Dunedin Goldsmiths and engraving firm John Swan and Co. Her stock was sourced from New Zealand, Australia and China.
They could represent ''your children, your marriage, your family, or whatever it is that you love''.
Mrs Scott-Walker's foray into the jewellery business was unexpected as she was ''never really into jewellery that much''.
Born and raised in Dunedin, she completed a pharmacy degree and was part-owner of Knox Pharmacy for several years, selling up in 2010.
She had been doing a few shifts for pharmacist friends but had to stop because she became too busy with LoveLoops. She has just employed her first part-time staff member.
The business reached a ''turning point'' where she had to decide whether to keep being a pharmacist, or ''run with'' LoveLoops and grow the business.
She liked a challenge - ''I don't function very well if I don't have a challenge'' - and believed there was a gap in the market to be filled.
The family moved into a new home in January. One of the main reasons for buying it was the ''massive'' area downstairs suitable for her office.
Mrs Scott-Walker, who recently started a cufflink range, said she needed to slow the business's growth.
She planned to stabilise for another six months, get through the busy Christmas period - ''Christmas last year just blew me away'' - and then start looking at a new range in winter next year. People were asking for new products ''all the time''.
She was launching an Australian website this week which would also mean ''Australian dollars coming into the Dunedin economy'', she said.
She envisaged the business growing, hopefully employing ''a few'' staff, while still remaining based in Dunedin.
''It's exciting building something of our own and having it be successful. Having created this from nothing, it'll be interesting to see how far I can take it.''
She was pleased she had previous business experience which was proving useful. The main thing she learned from her time at Knox Pharmacy was the importance of watching expenses ''and not getting carried away''.
While the business was small, she had been able to be in charge of ''every single aspect''. However, it also meant she had gone from ''being the boss to doing every little job''.
LoveLoops will feature in the September issue of British Vogue, in a jewellery designers profile.
