RadiumOne last night transformed Sydney basement bar, The Bear, into a “Winter Onederland”, hosting the inaugural RadiumOnesie party.

Despite a run of above-average temperatures in Sydney this month, the theme was a hit with clients of the marketing technology company – who were invited to mark the beginning of winter by wearing their favourite onesie.

The prize for best dressed – which was two tickets to Splendour in the Grass plus accommodation – went to Holly Browne and Sophie Brennan from UM, who suitably impressed the crowd with their “dark social” onesies.

Adam Furness, RadiumOne Director of Sales and Business Development, said the party concept, which originally started out as a pun amongst the team quickly took off as a client event.

“Sharing is caring, and we’re a team that likes to work hard and have a few laughs with our clients. The Onesie theme proved to be really inclusive with absolutely everyone getting into both costume, and the spirit of things!

“It was an awesome night and a great way for us to celebrate what has been an amazing financial year with our key partners and friends,” he said.