The Doctor designed all her clothes.
Did he spontaneously invent those clothes or did Zimmerman/Barclay forget to erase all the porn he/they/he were hiding on the Doctor's server before they sent the final copy off to the factory for mass generation, fabrication and circulation.
We all have work at porn and... I mean we all have porn at work, not usable porn, just comfortporn so we don't start jonesing, and sometimes unfortunately we forget where we've hidden it when push comes to shove.
We've seen Barclay's porn before in TNG Holo Pursuits.
Quite unsettling, that he can't ravish Dee without beating on Riker first as foreplay.