The outfit itself is really cute, but it’s a bit big on me. I’m 1.63 cm (5’4”), my bust, waist and hip measurements are approximately 36”, 28”, and 39”, I’m between 60-70kg (120-130 lbs), so I ordered an M. The bottom part was still slacking a bit, even after I tightened it as far as it would go. And the top bra part was also not fully filled out on the sides. So if these measurements sound like you, and your cup size is around 34C (for Victoria’s Secret), then I’d suggest getting a small instead of a medium!