I'm doing two cakes.
One for the joint family part we're doing the weekend before for both our girls. One on the actual day of her birthday (DD1 is also getting her own cake)
DD1 has taken over decorating choices and is insisting on flowers and butterflies, so I've been practicing my piping technique.
Doing lemon layer cake for the party, and maybe a ginger and almond cake for her actual birthday. She'll only get a small taste of each one, so I'm not too bothered about what is right for her, and doing something to please the adults/older kids.