。
The combination of her kimono and obi is quite tasteful.
Literal
Her kimono [and-と] obi [possessive-の] combination [topic-は] tasteful [sentence-final-ね].
取り合わせ ('combination, pairing') specifically refers to coordinating items — colors, patterns, clothing. おつ (乙, 'tasteful, chic, with flair') is a colloquial aesthetic judgment meaning something has unexpected charm or refinement. だね is the casual confirmatory ending. The sentence demonstrates Japanese aesthetic vocabulary around kimono dressing, where the obi-kimono pairing is an art form.