Popular cruise line's bikini crackdown could surprise passengers at island ports

The reminder was issued before the ship's June 2 visit to the island as part of an eight-night sailing from Sydney.

Passengers were advised to avoid wearing G-strings, thongs, monokinis and mankinis while visiting the island. Topless sunbathing is also prohibited, the publication noted.

Fox News Digital reached out to Carnival Cruise Line for comment.

The dress code applies not only to beaches, but also to public areas such as markets, churches and community gathering spaces.

"We kindly ask guests to respect the local culture and rules in the ports we visit," Carnival states in its dress code guidelines.

The cruise line specifically identifies Lifou as a destination in which local customs call for more conservative attire.

"The communities in these locations also request visitors to wear traditional one-piece or full-piece swimsuits and refrain from wearing bikini or monokini-type swimsuits [while] at the beach," the website says.

Carnival reportedly warned that failing to respect local customs could affect future visits to the island.

The dress code reminder comes as cruise lines continue emphasizing destination-specific rules that may differ from onboard policies.

Carnival's swimwear policies have long been a topic of discussion among passengers online.

"Wear what you want," one Reddit user wrote.

Another traveler argued that revealing swimwear is already common aboard many sailings, saying, "There [are] people wearing that type of swimwear on deck 24/7."

Others felt guests should be more mindful in family areas.

"Maybe wear it at adult-only excursions and the adult-only hot tub," one commenter suggested.