The bust is measured from underarm seam to underarm seam across the front.  Double to get the circumference.  The length is measured from the shouldler seam straight down to the hem in the front center, in the front at the longest point, and on the sides. 
Bust: 28" across the front (56" around)
Center front length: 36" 
Longest point length : 45"
Side length (shortest point): 28"