Each of the celebrities will sponsor an unaccompanied child in the "Jungle" camp in the French port town of Calais, the centre for those hoping to cross into the UK, said The Hollywood Reporter.
According to Citizens UK organisation, 150 children in the camp have legal rights to reunite with family members in the UK, and the celebrities have signed up to a buddy system in which they will visit the kids in France or their British connections and contribute towards legal and humanitarian costs.
"We are each buddying with one unaccompanied minor to ensure that they receive the humanitarian support they need and to personally insist that both governments honour their obligations to these children," the statement added.