The ivory lace dress that Jayne Mansfield wore in 'Will Success Spoil Rock Hunter?' and was auctioned off by Debbie Reynolds in 2011 has found its self a good home at the Museum of Style Icons in Ireland. The museum boasts a number of costumes worn by stars such as Marilyn Monroe, Greta Garbo, Grace Kelly, Princess Diana and Audrey Hepburn to name a few. I think that Jayne's dress could not have found a better home.
Here is the link to view Jayne's dress at the museum.
http://www.newbridgesilverware.com/visit_us/museum/icon/12/Jayne+Mansfield#icons
One of the facts they mention they got wrong though. It says that she wore the dress when placing her hand prints in cement outside Grauman's Chinese theater. This we know Jayne never had the pleasure of doing. She did do it in a scene in the movie as Rita Marlowe, but unfortunately Jayne herself was never asked to do so. She did however wear this dress numerous times. She wore it for a New Years Eve Clock Countdown photoshoot and she also wore it on a publicity tour she did of Europe. She wore the dress when she was in Italy but she could have worn it again throughout other European destinations as well.