Joe Jonas AKA the future Mr. Sansa Stark went for a swim in Australia this week.
The DNCE frontman enjoyed a day at the famed Bondi Iceberg Pool ... which might be one of the coolest pools on Earth, and not just because of its chilly name.
FYI, it's also not the most accurate name because even though it's winter, it's the southern hemisphere so the temps are in the 80s.
However, the pool is pretty, pretty, pret-tay spectacular. The Iceberg pool is located right off of Bondi Beach and sits pretty much in the Ocean.
No word if there was any cake.