Senior judges have ruled that 20-year-old Shamina Begum, should be allowed back into the UK to challenge the revocation of her British citizenship.
Shamina Begun, when she was 15, along with two other friends, believed to be dead now, travelled to Syria to become Isis brides.
Former Home Secretary Sajid Javid revoked her citizenship on security grounds after she was found in a Syrian refugee camp in February 2019.
She challenged the move, arguing it was unlawful because it left her stateless.
At a hearing at the Court of Appeal last month, her lawyer also argued that Ms Begum, who remains in the camp in northern Syria, could not effectively challenge the decision while she was barred from returning to the UK.
Under international law, it is only legal to revoke someone’s citizenship if an individual is entitled to citizenship of another country.
In February, a tribunal ruled that the decision to remove Ms Begum’s citizenship was lawful because she was “a citizen of Bangladesh by descent” at the time.
Ms Begum is understood to have a claim to Bangladeshi nationality through her mother.