TBH I really do think (and hope) Mama Steph might be having back-to-back babies. Hers could easily be more than a stubborn post-partum belly. After all, she gave birth in what, May? Either way, she and Lobster aren't particularly obsessed with looking or being trim. They look happy, that's the most important thing.
Scrolling through the pics: there's one with Sebastian and Mr Korn (Imre) and they're all wearing these dated golden buttoned double breasted suit with matching ties, very entertaining. Also bride and groom look happy - nice
They are wearing regimental outfits from the Royal Military Academy Sandhurst, as all five cousins are graduates. Prince Paul-Louis has on the full uniform as he just graduated in August. I love the camaraderie of these Luxembourg cousins who have continued a family tradition!
(See photo 11 of 24) https://today.rtl.lu/life/royals/a/1579588.html
Archduke Alexander of Austria, son of Princess Marie-Astrid
Prince Wenceslas of Nassau, son of Prince Jean
Prince Paul-Louis of Nassau, son of Prince Guillaume
Prince Sebastien of Luxembourg, son of Grand Duke Henri
Prince Prince Josef-Emanuel of Liechtenstein, son of Princess Margaretha
The group photo includes all of the grandsons of Grand Duke Jean who graduated from the academy, excluding Hereditary Prince Guillaume. Grand Duke Jean completed his education there in 1943, during World War II, when the royal family was in exile. Both Grand Duke Henri and his brother, Prince Jean, attended Sandhurst in the 1970's. Prince Felix began the military program but was unable to finish it due to a serious knee injury.