Bradamante (Fate) in her Third Ascension outfit from Fate/Grand Order. This basically blends elements from her previous Ascensions and adds embellishments to them. The biggest change is that she now wears bikini armor and a larger coat over her shoulders. Artists tend to depict this Ascension without the coat, leaving her with the bikini armor.
Due to how similar this Ascension looks with her First Ascension, make sure you actually see she's wearing bikini armor rather than a full leotard. If you're not certain of which outfit she's wearing, don't use any Ascension character tag.