TODAY | March 21, 2013
>>> with the partridge family 's hit song "i think i love you" every teenage girl wanted to hear that song in the '70s.
>> now david cassidy is putting some of his personal items up for auction to raise money for a cause close to his heart.
>> david is here along with martin nolan . good morning.
>> good morning.
>> we're having a '70s retrip here with the outfits.
>> imagine how i feel.
>> you could still fit in them. that's the scary thing.
>> a little -- it's amazing what happens to your body as you get a little older. but i was, you know, probably 120 pounds at that time. and i'm not sure i could fit into them. but for anyone who is curious, these were all from different eras of the '70s. this outfit here was the first one that was made for me. the same person who made elvis' outfits. and you might recognize the fringe.
>> from some of the late '50s, this is '70s, early '70s.
>> before we go any further, you should mention why you decided to auction off these items.
>> indeed. my mother recently passed. she had severe dementia for over seven years.
>> and in the end, she was really not functioning at all. no parts of her body. so it was basically keeping her alive -- her body finally broke down, but she was 89, it was seven years. so the alzheimer's association of america for all of you out there, i'm sure some of you know how difficult it is for family members and friends, et cetera .
>> what i'm doing is auctioning all of these off for all 100% of the proceeds are going to go to charity.
>> and for the alzheimer's association of america. 77 million baby boomers , largest percentage of human beings .
>> that's right.
>> -- in this country. and we just reached a very tiny tip of the iceberg .
>> this is a great cause.
>> and martin, let me ask you, because i imagine there's a lot of interest already. tell me what you think this auction will do.
>> yeah, of course, david cassidy is an icon. how great it is to be talking to him about the outfits he wore.
>> oh, come on.
>> it's true. it's highly collectible. we sold outfits like these before. onesies.
>> that's not the sexiest name to come up with.
>> they were made by nudie, a legendary guy who made elvis' outfits. he made a lot of the country western . anyway, i wore these on tour and all during the 1970s , they were all hand done and we sold a couple of them for $5,000 $10,000.
>> there was a time when --
>> well, tomorrow night they can come and see me i'm in westerly tomorrow night doing a lot of that stuff.
>> love it.
>> and there we are.
>> david cassidy and martin nolan . thank you.
>> and savannah, the auction is at the hard rock cafe in new york city .
>> may 18th.
>>> coming up next, a multimillionaire who chooses to live in a 420-square-foot studio. we'll get