Model is 7 inches (18 cm) tall when built.
Leia is dressed in her white dress from the original Star Wars movie and she is sporting a personal blaster that she uses during the opening scene aboard the spaceship Tantine IV.
She also has articulated connections at the neck, shoulders, elbows and the waist, for fun poses (see images below).
See Brickvault Youtube video of this model from my visit to their studio.
She is scaled to accompany my custom R2-D2 model (see link below)
Note: The link to the R2-D2 instructions also contains bonus instructions for R5-D4 at the same scale.