Fans were a bit perplexed when they saw Natalie Portman on the purple carpet during the Avengers: Endgame Los Angeles premiere on Monday night.

After Portman starred in the first two Thor films as Jane Foster, an astrophysicist and Thor’s love interest, she disappeared from the Marvel Cinematic Universe. Now viewers are wondering if Portman’s appearance during the screening means her character is making a return. She starred in 2011’s Thor and 2013’s Thor: The Dark World.