basic principle of this game is if something doesn't work - come back later.. Some outfits are only found in bulma training room, Picolo gives the best skill in the game.
Chi chi last 3 scenes, just go to her at midnight
Maroon - formal wear white clothes, then check quests (buy a ring)
Mai (4 scenes) - 2 outfits of her previous comrades. Then you need Trunks outfit (from the training) AND SPEAK to her during the day (its insane how long i spent searching what to do). Then speak second time and buy a rope.