If, following your fine leadership example, members of your house troops scam the Sororitas contingent on board into appearing in a bikini calender.
If your astropath has, following a significant bribe, also agreed to appear in said calender, in a slingshot.
If the only reason the Rogue Trader knows any of this happened is that the magos biologis was upset she DID NOT appear in said bikini calender and started a project to appear less disturbing to the crew without impacting her other abilities. Which in turn led to the seneschal being asked to procure '20 pairs of the finest breasts available'. Which in turn led to some questions about what exactly was going on in the Medicae Deck.
If the daemonhost you have as your personal adviser is ALSO mad he didn't get to appear in the calender. Also, the daemonhost is a daemon of khorne.
I wouldn't mind having a Valkia the Bloody pin-up in my room...