Bishoujo Senshi Sailor Moon: Sailor Stars, Dokidoki! Precure Recommendations
You can REALLY see the influence of Sailor Moon and of Sailor Stars. Especially in the plot of having a rivalry of "other world" Senshi/Cure and Earth Senshi/Cures as well as the fact we having someone singing to summon a princess, and that princess is young/a baby (with heart odongo hairstyles too!). Also the enemies are a human looking group (Sailor Moon kept this for all seasons) who bicker amongst themselves in their own bar (SuperS reference?). The enemies are all people with corrupt hearts (star seeds/dream mirrors/etc.) which are then purified back to being human.
-Cure Diamond′s pose is similar to Sailor Venus′ pose.
-Regina looks like Minako Aino/Sailor Venus.
-Ai is similar to Chibi Chibi.
-Cure Sword and Sailors Starlights came from another dimension and became idols to search for a princess.