Lala with her school uniform and princess dress, use strength 0.8 for her "main outfit" and 1 for her "princess dress".
Trigger words for each outfit are
Strength 0.8
1: lala deviluke, main outfit,
Strength 1
2: lala deviluke, princess dress,
Use Strength 0.8 for any other outfits if you want to dress her up in clothes other then her school uniform or princess dress.