Laure Marsac is topless with her friend (supposed to be the same age, but played by 24 y.o. actress) when they jump into the pool after being in sauna for a while (where everybody is, according to modern neo-Victorian rules, completely wrapped in towels).
A naturist swimming competition in the pool. We first briefly see two girls and a boy alongside the photographers. Then in the front row on the podium, there are two girls and two boys who are given the trophies.