I have all the EPs and some of the SPs (including M&G stuff). Right now I'm testing my hacks and mods to see which ones work with this hack. Pregnant Sims Wear Any Outfit for EP8 seems to work fine with Inteen updated for Apartment life. All of the options seem available. Teens wear regular maternity wear that come with Inteen and adults were their everyday outfit. So far so good!  

EDIT: Forgot to say thank you so much, Squinge. Where are my manners?