Chris Pratt and Katherine Schwarzenegger just marked a big milestone tonight: their first red carpet together. The couple, who has been together for a year now and engaged since January, walked the Avengers: Endgame premiere. They coordinated their outfits for the occasion, Schwarzenegger in a one-shouldered grey dotted dress and Pratt in a matching grey checkered tie.

World Premiere Of Walt Disney Studios Motion Pictures 'Avengers: Endgame' - Arrivals
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Up until this point, Pratt and Schwarzenegger had only been photographed out together on dates, although those sightings themselves were rare. They had never been each other's plus one on a red carpet.

Celebrity Sightings In Los Angeles - March 06, 2019
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Pratt with Schwarzenegger while arriving at Jimmy Kimmel Live earlier this year.
London Celebrity Sightings -  January 28, 2019
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Pratt and Schwarzenegger holding hands in London on a date early this year.

Pratt and Schwarzenegger started dating in April last year. Their relationship was first reported in June. E! broke the news then, reporting that the two had been together for two months. "It's still very new between Chris and Katherine but the picnic was not their first date," a source told the outlet at the time. "They have been on multiple low key dates and have been talking consistently for the last two months or so."

Pratt announced his engagement to Schwarzenegger in January. "Sweet Katherine, so happy you said yes! I’m thrilled to be marrying you. Proud to live boldly in faith with you. Here we go! 💍🙏♥️" Pratt captioned his Instagram of her hugging him and wearing his ring.

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Tabloids have run sporadic updates about their wedding since his proposal, with E! reporting most recently that a date was not set at the end of March.

"Katherine is taking her time with planning the wedding," a source told the outlet then. "Katherine and Chris have talked about a winter wedding; they are just really busy to plan anything sooner than that but plans are still fluid."