Will I have a flat stomach after BBL? (photos)

You are a good candidate for a brazillian butt lift. You have enough fat for harvest, & subsequent transfer which will help you achieve an hourglass figure. However, for a flat tummy, lipo alone will not help you achieve the results you are looking for. You would need a tummy tuck to address the loose skin below the umbilicus, with or without muscle repair.

To be completely honest with you, I think a flat stomach is an unrealistic expectation. I think you'd be disappointed if that was your intention going into surgery. Go ahead with a BBL, but anticipate the need for a tummy tuck later on to obtain an ideal contour.

Hello and Great Question.  I appreciate the time you are spending researching this procedure.  My name is Dr. Matthew J. Nykiel.  I am a Board Certified Plastic Surgeon, a Fellowship Trained Cosmetic Surgeon, and a Butt Augmentation Specialist.
Liposuction removes fat.  There are certain types of liposuction i.e. laser and u/s that can tighten the skin, but there is a limit and it is modest tightening.  Based on the photos, it looks like you have loose skin and some tummy muscle separation that after the liposuction will remain.  Therefore, I think the liposuction will reduce the size of your tummy significantly; it will not completely flatten your tummy.
I hope that helps!  Best of Luck!
Matthew J. Nykiel, MD#TopREALSELFDoctor#CoreREALSELFDoctorButt Augmentation SpecialistLiposuction SpecialistBoard Certified Plastic Surgeon