Is there a BMI limit for every procedure?

Dear Workingonme17,
Almost every plastic surgeon will tell you that you should reduce your BMI to at least 30 to be a candidate for a surgery. However, you should try to reduce it as much as possible because higher BMI is linked to a higher chance of complications. 
I hope this was helpful,
Dr. Barrett,Beverly Hills, CA

Congratulations on your weight loss. In general, a BMI of 30 or less
is considered ideal but this is not a hard and fast rule.
Most plastic surgeons suggest that you finish having children and get your
weight within 10 pounds of your ideal weight before undergoing an
abdominoplasty with repair of the stretched out abdominal muscles and
liposuction of selective areas, in order to achieve the best long term cosmetic
result with the least potential complications.
Following the advice of anyone who would presume to tell you what to do without
seeing photos and more importantly without taking a full medical history,
examining you, feeling and assessing your tissue tone, discussing your desired
outcome and fully informing you about the pros and cons of each option would
not be in your best interest. Find a plastic surgeon that you are comfortable
with and one that you trust and listen to his or her advice. The surgeon should
be certified by the American Board of Plastic Surgery and ideally a member of
the American Society for Aesthetic Plastic Surgery (ASAPS). You should discuss
your concerns with that surgeon in person.
Robert Singer, MD FACS
La Jolla, California.

Thank you for your question and congratulations on your weight loss.  There is no formal established limit for BMI prior to cosmetic procedures.  A very general recommendation is that a BMI of 30 or less be achieved before significant body contouring.  However the BMI of 30 is still high and surgical results and recovery are much better and complications lower with lower BMIs.