In 2002 , with the middle - aged Prince Albert II of Monaco still a bachelor-at-arms without an eligible heir ( previous kid bear out of wedlock did n’t count ) , Monaco ’s parliament amended the make-up to earmark purple magnate to pass from a reigning prince with no descendants to his siblings . Parliament was worried , it seemed , that the Prince would remain single and never sire an heir . He tackled the first detail with his 2011 marriage to former Olympic swimmer Charlene Wittstock , and now is about to determine off the latter , double over .

Her Serene Highness Princess Charlene is due to give giving birth to Gemini by and by this month — the first twins in the royal sept history — give Monaco not one but two eligible heir . But although they ’ll partake in a birthday , the babies wo n’t have equal call to the throne . As would have been the case ifKate Middletonhad given birth to twins and not just baby George , successiveness follows a nonindulgent seniority rule : Whichever sister is born first is the heir . The purple family of Monaco differs from the British monarchy on some of the specifics , though .

British Commonwealth leader pop off a law in 2011 that reserve women bear into the royal kinsperson the same right wing to the throne as men , so even if the first twin born was a girl , she would still be the inheritor . Monaco , however , has made no such amendment and still abides by male precedency . So if the twins change state out to be a young woman first and a male child secondly , he gets bumped above his baby in the ecological succession wrinkle . The Prince and Princess have abstained from finding out the baby ' sexes , so it ’s not known if this will add up up .

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There ’s also the issue of cesarean segment , should it shew necessary .

" The obstetrician will always have first the Twin Falls that presents itself first when the womb is opened at the prison term of cesarean section , " Dr. Patrick O’Brien , spokesman for Britain ’s Royal College of Obstetricians and Gynaecologists , severalize theAssociated Press . " We do n’t determine in procession which couple to deliver first . "

Either elbow room , two babe means twice as many gunfire . The palace has already harbinger that when the similitude are hold 42 shank shots will sound , instead of the 21 that would boom for a single babe .