In mere days, Kate Middleton will go from being a mommy of two to a mommy of three as she gives birth to a babe with a very regal title: His (or Her!) Royal Highness of United Kingdom of Great Britain and Northern Ireland. Reports are now circulating that the Duchess of Cambridge may also soon have a new title of her own, however — Aunty Kate!

Though a rep has declined to comment, a report from The Sun claims that Middleton’s little sis, Pippa Middleton, is expecting her first child.

The 34-year-old tied the knot with hedge fund manager James Matthews back in May after rekindling their romance a year prior.

With the report listing the couple’s due as sometime in October, it would mean that the sisters have been sharing in their pregnancies together — at least for a little while.

Kate’s own pregnancy was announced by the royal family back in September with a statement from Buckingham Palace.

She has since taken maternity leave from the public eye, and is not expected to be seen again before brother-in-law Prince Harry and Meghan Markle’s May nuptials.

Are you looking forward to seeing potential maternity style from Pippa? Sound off over @BritandCo.

(Photos via Dave M. Benett, Clive Brunskill, + HGL/Getty)