1 ounce envelope for a 6x9 is 1 stamp.
.90 for 2 stamps
1.35 for 3 stamps and so on.
For 1 or 2 photos I would say 1 or 2 stamps would be good.

[quote="anglophile"]I plan on sending things from NY to other states in the US and wanted to know roughly how many stamps you guys put on your envelopes. I'm sending/requesting one/two 4x6 prints and having them sent back in the smaller size (6x9) of the yellow envelopes.

Sorry, I'm new to this whole collecting thing and I'm trying not to screw it up!

Thanks! {up}[/quote]

use this:
http://postcalc.usps.com/

put in the zipcode the celebrity will be sending it from... your own zip code,
probably best to pick large envelope
with does not bend easily option
then selecting first class mail.

will give you the postage you will need.

best of luck to you!

I plan on sending things from NY to other states in the US and wanted to know roughly how many stamps you guys put on your envelopes. I'm sending/requesting one/two 4x6 prints and having them sent back in the smaller size (6x9) of the yellow envelopes.

Sorry, I'm new to this whole collecting thing and I'm trying not to screw it up!

Thanks! {up}