Inclusion Criteria:  Diagnosis of AIS Current treatment with a TLSO, of ≥5 months' duration Existing 3D surface scan of torso and out-of-brace x-ray within the past 6 months. If no scan exists, patient must be willing to undergo a scan to allow fabrication of the GSM brace. One curve apex below T7 Female sex (85% of the AIS population is female) Ability to read and write English Age 10-15 years  Exclusion Criteria:  Parents/patients who decline participation and/or do not sign the consent/assent documents Pregnant women Patients who are unwilling or unable to return for follow-up visits Patients who are unable to read and write in English.