Hinamatsuri

Hinamatsuri also called Doll's Day or Girls' Day, is a special day in Japan. Hinamatsuri is celebrated each year on March 3.Platforms covered with a red carpet are used to display a set of ornamental dolls (hina-ningyō) representing the Emperor, Empress, attendants, and musicians in traditional court dress of the Heian period.(from WIKI)

You can get this set of hinaningyou on 7 steps shelf at the SL marketplace.

This is a bit different from popular setting. (see wiki)
The top tier holds two dolls, known as imperial dolls.
The second tier holds three court ladies.
The third tier holds five male musicians.
Two ministers and dance stage displayed on the fourth tier.
The fifth tier holds foods and two cookers.
The sixth tier holds items used within the palatial residence.
The seventh tier holds three helpers and
　　　　  items used when away from the palatial residence.

A small pair of hinaningyou with cakes.

Kanji on the partition says, "hope our long life". 

A pair of imperial dolls made by cake.

Sakura and ume trees in front of three cakes