Asked whether she met with her Finnish counterpart "just because" of their similarities in age and gender, New Zealand's leader questioned whether reporters would ask the same of her male predecessor.
Art works by the American actor and Australian musician are featured in an exhibition of sculptures and ceramics. Both acknowledged being excited and nervous about presenting their art in public.
Calls for Sanna Marin to take a drug test came after leaked videos showed her partying with friends. Marin has said she didn't consume any drugs, but took a test to "clear up any doubts."
Wednesday's vote for the candidacy of two Western European nations took a crucial step toward expansion of the North Atlantic Treaty Organization.
The anticipated approval by the 30 NATO allies for Sweden and Finland on Tuesday will send the membership bids of the two nations to the alliance capitals for legislative approvals.
The move came just days after the Nordic country announced it wanted to join NATO and marked a likely end to Finland's nearly 50 years of importing natural gas from Russia.
The 30 member countries of the military alliance are expected to take up to two weeks to evaluate the applications.
Finland changed its policy toward the military alliance after troops invaded Ukraine. Sweden has avoided all military alliances, but like Finland, has also grown closer and closer to NATO over time.