To address an envelope to two young sisters, you can use their names in the following format: "Emma and Sophie Smith." If you want to include a more formal touch, you could write, "The Smith Sisters," followed by the last name. Make sure to include their address below, ensuring that it's clear and easy to read.
To address an envelope to two single sisters living together, you can write their names on the front in this format: "Ms. Jane Smith and Ms. Emily Smith." Place their names on separate lines if you prefer, or you can also write it as "Jane Smith and Emily Smith." Be sure to include their shared address below their names.
To address an envelope to two young girls, you can write their names on the front of the envelope, separated by "and." For example, if their names are Emma and Olivia, you would write "Emma and Olivia Smith" (assuming they share the same last name). If they have different last names, you can write "Emma Johnson and Olivia Brown." Make sure to include their titles (like Miss) if desired, but it's not necessary for young children.
He had two sisters and no brothers
Four sisters, though two died young and didn't reach adulthood.
Picasso had two sisters. One died very young.
Address block
* For High School Graduation invitations for couples it should be Mr. & Mrs., but, if the two people are living together you could address the envelope to: Mr. Jack Smith and Ms. Jane Doe. Even if they are younger friends or young relatives in your family there should always be a Mr. or Ms. in front of the name.
He had two sisters, Arnita and Eleanor.
He had two brothers who died young and seven sisters
His father, mother, and two sisters. One died young.
Senior Doctor first if it is a medical reason or unmarried, Man first if it is a married couple.
I think it would be proper to address the two married PhDs as Drs. John & Jane Doe