Ronni Nicole Vibrant Floral Maxi Dress in size 18.
95% polyester 5% elastane.
Slimmer lining 92% polyester 8% elastane.
Flat unstretched:
Underarm 39"
Waist 38"
Hip 52"
Length 56"
Mannequin is a size 14 and in my opinion this dress would also be suitable for a size 16. Please see unstretched measurements above.