Evolution of the postperihelion jet morphology of 3I/ATLAS observed with HST/WFC3-UVIS on 2025 November 30, December 4, December 12, and December 27. All images were processed using the LS filter (DeltaR = 0.1, rotation angle = 31°). The main jet remains visible throughout the observing campaign while exhibiting significant changes in orientation and morphology. The sunward direction is indicated in the November 30 panel. North is up and east is left.