Shiina Ringo question

[Keishi]

I'm just new to this artist and I thought of asking some things about her.

+After Ringo no Uta, is she still singing solo or fully joined in Tokyo Jihen?

+Does Ringo no Uta PV costumes was modeled after her past singles? Coz I see Honnou outfit & Stem outfit in that, and I was wondering if there's other.
Pictures from her PV/Cover could be helpful for my references.

Thanks in advance