AI was thinking of making a handbag (purse) cake for a friends birthday and it will need to feed 25 people what size cake do i need to make it? 10" with a bit cut off and turned on its side or is it too small

look at Wilton's cake chart. A 1 layer 10" won't feed 25 IMO...

AEven if its 3" or so deep?

how many 10" layers will you be using? The amount of cake from the chart will be close regardless of how it is shaped....

AWas thinking a 10" round 3" deep cake cut in half with jam in middle so does that mean its 2 layers? Sorry am still quite new to all this

a normal 2 layer is 4" thick. that would be (2) 2"h 10" rounds. You will need to carve a portion from the bottom to make it stand up, plus a little from the top to make sculpt it...see the pic of mine in my birthday album. Is that what you are going for? Mine was (1) 10" round cut in1/2 and stacked on its side...Not all guests eat cake either...if you did the (2) 10" rounds that is 38 servings before carving, but if you cut them in half to stack on their sides that is not going to be very proportional....another idea...do an 8" round 2" deep. Cut in half and place together on sides (making it 4" thick), carve a little from the top then make some stilletto cupcakes (google them) or cupcakes with little high heels made from chocolate molds.

AMake a 10 inch round as a base, and then the cake purse on top - like the round is the display stand. Then you could feed more people, amd make a smaller size purse, if you wanted.

ANot sure how to check your pics from my phone will try and have a look later when kids are at school. Thank you for your advice i really am grateful :-D