I've never tried it myself, but ....

I passed this address on for such purposes and some came back to me and told me they got an autograph, so at least it is worth a try:

Barbra Streisand
160 West 96th Street
Suite 8S
New York, NY 10025
USA

They included an self-addressed envelope and an international reply coupon.

Gook luck for you - maybe it works, but January is pretty short timing.

Yentl

Thanks for your suggestion, I'll give that a go. Very much appreciated BwayBabs

Have you thought about writing to her Manager, Mr. Martin Erlichman? I once wrote to him asking if Barbra had recorded a particular song, and mentioned in passing that I would be going to one of the London concerts in 2007. I had an unexpected (and unsolicited) signed photo of Barbra sent to me in reply. Last year I received a second signed photo of Barbra (again, unexpected and unsolicited) after I had written to Mr. Erlichman asking him to pass on my appreciation of and compliments to Barbra for a particular track from her "Higher Ground" album. We all know Barbra is a busy lady, but it may be worth asking Mr. Erlichman if he can help on your behalf. Remember he will be scrutinising your letter to make sure you are not of the the "Krankies" or "Crazies" (crazy people) who try to write to Barbra directly, so it stands to reason that he probably only forward such correspondence that he thinks is appropriate. I guess that means no "begging" letters, and nothing long-winded. It might be an idea to include some apprreciation of Barbra's work (I'm guessing something other than "People"). I guess that if your letter overall is charming, witty and intelligent, who know it might just get you the result you want.