Both Mia, five, and baby Lena don’t have titles, and neither do their cousins, Savannah Phillips, eight, and Isla Phillips, six.
The family also don’t take part in royal duties, but are often seen at royal events such as weddings.
Born on June 18, 2018, Lena is one of the most recent additions to the Royal Family.
Pronounced Lay-na, she is the seventh great-grandchild of Queen Elizabeth II and Prince Philip and 19th in line to the throne.