The six-months-pregnant star showed off her baby bump in a casual blue halter dress. She accessorised with an exotic skin print boho bag, sunnies and flat woven sandals as she went sightseeing. Muse frontman Bellamy is having to mix in work with play - his band is opening for U2, who played a few shows in Argentina over the weekend.
What do you think of Kate's maternity style? Leave a comment and let us know.