Size is 4. Underbust is 29.5cm. The third photo is for reference, showing the difference in underbust length with size 6. Washed 2-3 times. I'd prefer to exclude the cups, as I'm concerned about hygiene issues when listing the item. Lululemon V-back black yoga bra, supportive stretch material. - Color: Black - Brand: Lululemon - Design: V-back - Material: Stretch material - Features: Supportive design Thank you for looking.