Vintage 1970s boho maxi mod party dress Hartly Westwood

Lovely mod / boho maxi dress, by Hartly Westwood!  Totally something I could see being worn on "The Brady Bunch"!  Yellow top, print skirt, white exaggerated collar and sleeves, velvet-feeling accent belt and neck bow!  So distinctive, retro, and sweet  Back zipper. Collar and belt both have hook-and-eye closures in the back. Note: Collar is missing one of the hooks.  Size and materials not listed. Item has brand tag inside. Pit-to-pit approx 17", waistline across approx 13", top of shoulder to bottom hem approx 55". Measurements are approximate! Size down if unsure about sizing. Buyer please note: Some fraying to ends of neck bow, some discolorations to white sleeves and collar. Discolorations have been cleaned and have faded significantly. One pulled seam on left arm, this is being noted to buyer. Item is being sold as used.