Rachel Weisz & Another Baby: "You Never Know!"

They may be living the life of newlyweds but Rachel Weisz, 41, and hunky hubby, Daniel Craig, 43, haven’t ruled out the possibility of adding to their terrific twosome someday.

Weisz – who has 5-year-old son, Henry, with Black Swan director, Darren Aronofsky – reveals that she “wouldn’t make [a baby] just for the sake of giving my son a sibling. But… you never know!"

The Dream House leading lady gushes to Lucky magazine that “there’s nothing like blue-eyed boy in a stripy blue shirt!”

Weisz and Craig - who has daughter, Ella, 19, with ex-wife Fiona Loudon - married in June after a very private courtship.