To keep the ball rolling, I'd like to mention a few articles of clothing not previously referred to.
Dorothy Harder's fur coat, button hook (for her shoes) and a bottle of brandy are still preserved by her grandson.
The tuxedo worn by Frederic Seward is currently in the possession of his descendents.
Not exactly clothing, but the silver flask Richard Norris Williams had in his pocket is in the ownership of his grandson. There's a photo of it on his biography.
Mary Finck Davison's violet/blue skirt is still cherished by her niece, Marion. I understand Marion presented it in a few lectures she gave regarding her aunt. There was an excellent article published in 1998 which contained a photo of Marion wearing the dress.
The burgundy coat worn by Stewardess Mabel Bennett into lifeboat 5 was auctioned off at a British Titanic Society convention several years back. It sold for a mere $2,000.
The hat worn by Frederick Spedden on the night of the sinking is displayed in a museum, possibly the South Street Seaport attraction in New York City.
A Tiffany & Co. diamond ring worn during the sinking by Emma Bucknell was auctioned off in the midwest in 2004. It sold for $32,000.
Several pieces of valuable jewelry belonging to Charlotte Cardeza were saved by her companion, Anna Ward, along with a pair of salt and pepper shakers she took from her cabin. These are still owned by her family.
The ring worn by J. Bruce Ismay in collapsable C is still in existence. It was acknowledged in an article written by Senan Molony. The ring's inscription reads 'Be Mindful'.
The lifebelt worn by Lady Duff Gordon and inherited by her secretary Mabel Francatelli was auctioned by Christies, via Francatelli's grandson, in April 2007. It sold for $60,000. The lace apron purportedly worn by Francatelli during the sinking is preserved at the Merseyside Maritime Museum in Liverpool.
I understand a few articles of clothing saved by the Hayes's maid Mary Anne Perrault were sold through Sotheby's some time back. I don't know the specifics.
The leather gloves recovered from the body of Charles M. Hayes are/were displayed at the George Wright House Museum in Halifax as of 1996.
A fur wrap worn by Harriette Crosby is still owned by her family.
The signet ring George Widener put on his wife Eleanor's finger as she boarded lifeboat 4 was cherished by their grandson Eugene "Fitz" Dixon. When he died in 2006, he was buried wearing the ring.
A silver monogrammed brush belonging to Walter Miller Clark was purportedly saved by his wife Virginia. The brush is currently in my possession, having acquired it from the Clark's grandson.