Elizabeth got engaged to actor Boyd Holbrook in March of this year after dating for nearly two years.
Reports recently surfaced that the 25-year-old actress was planning a double wedding with her 27-year-old sister.
But at the Godzilla junket, Elizabeth set the record straight to E!'s Alicia Quarles.
"Someone asked me...if my sister and I are having a double wedding and I said, ‘No.' And they're like, ‘Planning! Wedding plans!'And I'm like, ‘I just said 'no' to a question.' But I guess that means a lot more is happening."