I'm going to be making a baby shower cake with the fish bowl turned upside down on it. Knowing the bowl will be heavy and we will be having cupcakes for dessert, I was thinking of doing the cake fake. Was just wondering how long the mother-to-be can keep it?? Thanks...

I've had fake cakes for years. Some colors may fade, especially in sunlight or under florescent lights, but over all it should last a long time.

ditto forever.

I had a 6-tier that was in the corner of my shop and the (BC) icing started to turn yellow. I decided to move it to the big picture window and the sun changed it back to all white again! Cool!!

Even if the cake is done in Fondant???

Yep. Some fondant colors will fade out in sun or bright lights though.

Yup . . fondant will also fade , i once a baby the sweetest little cake, in baby pink for a friend . . i left it on the counter for an few hours to settle, when i came back it was white :O!!

Pink and Purple tend to find the most, especially in sun or florescent lights.

I've had dummy cakes that had fondant in black, red and blue, brown and pink. My pink changed colors but didn't fade much in a years time, BUT I did have that cake in a box, not out on display.

White royal icing will yellow over time.

I have a couple of that are several years old and still look the same. I keep them in the basement where sunlight doesn't hit them all day long, and even my pink one hasn't faded.