Image copyright Reuters Image caption Prime Ministers Volodymyr Groysman and Justin Trudeau met in Ottawa

Canadian Prime Minister Justin Trudeau is well known for his style, and his colourful - sometimes themed - socks.

When Ukraine's trade representative, Nataliya Mykolska, visited Mr Trudeau she took the opportunity to contribute to his collection of - what broadcasting platform Ukrinform has called - "unusual socks".

Ukraine's Deputy Minister of Economic Development and Trade tweeted a photo of her special delivery from Ukraine's PM Volodymyr Groysman, intended for Mr Trudeau as part of a promotion of trade relations between the two countries.

Commentators appeared to be split on whether it is an appropriate present for a head of government.

As photos circulated of the two leaders, a Facebook post by Ukrainian news website Hromadske.ua spurred a mixed response about Mr Trudeau's footwear.

Image copyright kmu.gov.ua Image caption The two prime ministers held talks in Ottawa

Kateryna Krotkova, who spotted a familiar brand, was happy she "has something in common with Justin now".

"Did they just give sweat socks to the prime minister? Wow, cool," said Sergiy Petrakov with some sarcasm.

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This is not the first time Mr Trudeau's socks have been in the spotlight. At the G20 summit in Hamburg, Germany, Mr Trudeau's socks did not go unnoticed in his Instagram post in July.

Image copyright Justin Trudeau Image caption Justin Trudeau's picture was liked by more than 40,000 people

Sometimes, leaders who meet Mr Trudeau reciprocate. Irish Taiseach Leo Varadkar engaged in some "sock diplomacy" in his first meeting with his counterpart in Dublin in July.

Image copyright PA Image caption The Irish Taoiseach wore Canadian-themed socks to welcome Mr Trudeau

On Thursday, at an event to promote US-Canada relations 'GoNorth17' Google's former CEO Eric Schmidt, now Executive Chairman of Google parent company Alphabet, acknowledged Mr Trudeau's socks as "always outlandish" and wore Canadian socks, which prompted them to compare at around 5:30 into their discussion.

"Everyone says to compare socks," Mr Trudeau told the audience. "It never bothers me when people have better socks than I do, because they're playing my sock game."

Mr Trudeau has definitely got into the spirit of things for special occasions, showing off his Star Wars socks on 4 May - for #MayTheFourthBeWithYou:

Image copyright Reuters Image caption Mr Trudeau celebrated 'Star Wars Day' during his meeting with former Irish Taoiseach Enda Kenny

Of course, there were his rainbow socks at Toronto Pride:

Image copyright Reuters Image caption The Canadian PM also wore Eid and Pride-themed socks at the Toronto Pride Parade

And another Star Wars pair - Chewbacca this time - for a business forum in New York:

Image copyright PA

If you can't get enough of Mr Trudeau's socks, there is even a dedicated Facebook page.