Olivia Rodrigo and BFF Iris Apatow perform a Y2K look while touring Europe during the Sour tour

Olivia Rodrigo and Iris Apatow brought their passports to Paris!

On Wednesday, the "Good four u" hitmaker posted a carousel to Instagram documenting his European adventures between sold-out Sour Tour concerts.

In additional photos from the French city and a fun retrospective of him wearing a Paris shirt as a child, Rodrigo also gives followers a glimpse of his holiday style, which he coordinated with best friend and love interest Iris Apatow, who was with him on a trip to Paris.

The 19-year-old star posed for a cute photo in front of the Eiffel Tower while displaying a modern Y2K ensemble.

Rodrigo wore a heather gray pleated skirt and matching tank top with knit lace detailing, oxford platform shoes paired with calf-length socks, a shoulder bag, and sunglasses. Apatow wore a structured blazer over a floral dress, fitted Mary Jane heels, and a beige shoulder bag.

The "SIM" singer also shared his photo in front of the Duomo di Milano in Milan, Italy. She wore a black tubular top with white ribbon buttons, James Dean pants from Tired Thrift, and platform shoes. She added accessories to the look with square frame glasses and a bag.

"Europe so far," he signed the photos.

This talented and modern duo doesn't hesitate to share their best friend's funny moments on social networks.

In March, the couple visited a tattoo shop with internet stars Charlie D'Amelio and Avani Greg. In a video uploaded to TikTok by D'Amelio, Rodrigo and Apatow show off matching tattoos on the heart of their index finger.