**Katy Perry and Justin Trudeau’s roughly 11-month relationship, which went Instagram-official in late 2025 and received its first major red-carpet confirmation at the June 2026 Tribeca premiere of her Lifetimes Tour concert film, underpins the market’s 63.5% “No” on an engagement announcement by December 31, 2026.** Traders view the timeline as tight for two high-profile figures navigating blended families, Perry’s touring schedule, and Trudeau’s post-political profile, even as the couple has described each other warmly in public and shown consistent PDA. Historical celebrity dating patterns and the absence of any engagement speculation or precursor signals reinforce the current consensus, though a rapid next step remains possible if momentum accelerates before year-end.