Definitely not just a sleep top!
I would not wear this to bed - it's almost too pretty! i've been wearing this top under sweaters and shells as the weather is moving from winter to spring - i think it transitions the comfort of plaid into warmer weather perfectly! it dips a little low on me in the front (34b/c), so it's probably not for more professional settings. i like to wear it with a lacy bra-type top peeking out underneath.