I could do this as £75 for 2 tier or £45 for single tier but would need you to provide the Lego bit for the topper. I can add characters for £7 each or you could provide them. I would put the cake on a larger board and have Happy Birthday etc written on the board.
Lego Friends beach cake I made
torta lego friends - Buscar con Google
Lego Friends cake. More
Lego friends birthdaycake More
Perfecto! Pero con piezas de verdad
Bizcocho de Lego
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