Obtaining each girl’s personal collection is a simple matter. If you intend on going beyond that and getting the Friends achievements, I strongly recommend you keep some sort of database to help you keep track.

To get the other swimsuits for a girl, you don’t actually play as her. Instead, you play as another girl, and give those swimsuits as gifts. This can be a difficult process, as quite often the girls will reject swimsuits.

There is a LOT of misinformation on the internet on how to give swimsuits. Part of this is because the first game had a different system, and part of it is people assuming something makes a difference without extensive testing. Some things might actually be true, such as certain girls being less receptive at certain times of the day. However, all of these factors are made completely irrelevant by one thing: random chance. One can only influence how likely a girl is to accept a swimsuit to a certain degree.

Both the legitimate and exploit methods work initially the same way. First, start a vacation as the girl that you want to receive the suits. Once you’re at the hotel, clean out her inventory, putting stuff into storage, and throwing away any excess items. Then at the end of the second day leave the island and start a new vacation as the girl who will be giving the suits. Make sure that your partner is not your target girl (if she requests to be your partner at the start, start a new vacation) For the next 3 days, at every possible opportunity, give your target girl a love item (See each girl’s achievements for her list) from Zack of All Trades. (Morning, Noon, Evening, and in the Hotel) The best visual indicator that a girl is fully receptive is that when you’re in a cutscene with her, when she’s talking there will be four red musical notes above her head. She will also open any gifts you give her in front of you instead of taking it with her. There are still additional friendship points above this for her to accumulate, but you will have no obvious visual indicator. 3 days is a good way to play it safe, as it should eliminate any other possible influences like time of day or wrapping paper color.

If you are going for the legitimate method, cross your fingers and give your suit to your target. If she accepts it, spend one or two more days giving love items, and move on to your next suit. If she rejects it, spend another 3 days giving love items. As you’ll find out, Zack of All Trades isn’t going to be able to provide you with such a large number of love items, so you may want to spend a vacation accumulating love items so you’ll have them when you need them. At the end of every vacation in which you give gifts, switch over to your target and clean up her inventory.

If you’re using the exploit method, you do the same thing that you do for roulette. First spend 3 days giving love items, and then give a suit. As soon as you select the suit, press the guide button. If she does anything but put the suit on in front of you sign out. The only time you can know 100% of the time that she will keep it and not throw it away is if she puts the suit on in front of you. You can immediately try the next suit in the next time slot. If she rejects the suit 4 or 5 times in a row, you do not have full friendship points. Either try another suit or give another love gift.

For every achievement, the required items must be in your collection, not your inventory. Once every required item is in your collection go to bed. You will get the achievement immediately in the morning. If purchasing everything with Microsoft Points, you must first gift wrap and then unwrap everything before placing it into your inventory, otherwise you will not receive credit.