Roughly a women's 8/10.  Could easily can be altered down a few sizes and up one. 

• Jacket & Flare Pant (pant in plain white)
• 2 x button, peak lapel - embroidery, rhinestones, beading
• Chest: 94cm (37")
• Front Length: 68cm (27")
• Shoulders: 46cm (18")
• Arms: 61cm (24")
• Pant waist: 77cm (30.5")
• Thigh: 61cm 24"
• Length: 113cm (44.5")