C.O.
T.:
I'm sooo sorry about this!!
This has happened to me - not with baby pictures but with a vacation...Empty your purse, then the car you took....
Send an e-mail to the W. who hosted the party and tell her your situation...and ask her to send an e-mail to anyone who attended the party.
For the future to avoid this - you can buy a removable hard drive or even a thumb drive to transfer the pictures over to....you can get a 16G thumb drive at Office Depot for $15 or less...I have a 16G thumb drive on my key chain...so I can use anyone's computer to transfer the photos...
GOOD LUCK!! I hope you find it!!