Full context: シャレオツだた
Google translate shows: I was Shareotsu.
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Sign up to join this communityしゃれおつ or シャレオツ means cool, fashionable. Above.
Another version: おつしゃれ is a rearrangement of the same word however this version tends to be used amongst media piers, show biz etc. This version is not grammatically correct but still spoken as such.