It really isn't photoshopped onto the cup. The egg really is sitting there, with the others on top. No string was involved and no holes in the eggs. All I did was remove blemishes, smarten up the reflection (lightening it up to make it stand out more), adjust curves, highlights etc. In the one I originally posted here, I had got a little carried away with saturation and sharpening I think and it was before i calibrated my monitor too.
Mickledore, Im looking forward to the results of your attempt. maybe a mini 'can you try this' thread to see other attempts.