Ms Begum, now 20, was one of three east London schoolgirls who travelled to Syria to join the so-called Islamic State group (IS) in February 2015.
She lived under so-called Islamic State (IS) rule for more than three years before she was found, nine months pregnant, in a Syrian refugee camp in February last year.
Then-home secretary Sajid Javid revoked her British citizenship on national security grounds later that month.

British teenagers Cadiz Sultan, Amir Abase and Shamima Begum leaving the UK from Gatwick Airport
But SIAC ruled that "it does not follow that her appeal succeeds" and Ms Begum's challenge to the Home Office's decision to refuse to allow her to enter the UK to effectively pursue her appeal was also rejected.
Earlier this month, however, the Court of Appeal ruled that "the only way in which she can have a fair and effective appeal is to be permitted to come into the United Kingdom to pursue her appeal".
The judge found that "the national security concerns about her could be addressed and managed if she returns to the United Kingdom".

Shamima Begum was seen in a Kurdish camp the day after the Court of Appeal made its ruling.
He added: "It is difficult to conceive of any case where a court or tribunal has said we cannot hold a fair trial, but we are going to go on anyway."
The government said it was "bitterly disappoint" by the ruling and Mr Javid said he was "deeply concerned" by the judgment.
The Home Office immediately announced its intention to seek permission to appeal against the ruling at the UK's highest court, an application which is due to be considered by the Court of Appeal on Friday morning.
Even if the Court of Appeal refuses permission, the Home Office could still renew its application for permission to appeal directly to the Supreme Court.
The hearing, which will be conducted remotely via Skype, is due to begin at 9.30am on Friday morning.






R.C.