A little bit rude (& sorry for the white Nana legs!)....but this vintage slip came with the original tags still on, & it just happens to be a perfect match for the dress.
I teamed it with this pretty ceramic ring from an Antique fair for $4, & the gold bangle I got at the Collectorama fair.
The sweet blue slip with original tags for $1 at the Nana op shop. It has a kind of pointy brassiere thing happening.