I visited the Hollywood Costume exhibition last week and I thought it was fantastic.
It was $19.90 to enter per adult which I thought was a bit steep, but to be expected.
You must put bags and coats etc into the coat room (compulsory) which is fine but their was a ridiculously long queue for this, which was annoying because if you are going to make people do this the least you could do would be to put on a sufficient amount of staff.

The exhibition itself was very good.
The costumes are fantastic and accompanying many if the more modern pieces was a video from the director and designer talking about the design / structure etc.

Definetly recommended. Maybe not take smaller children though!

Approximate cost: $19.90

fantastic architecture, ambience, coffee, staff and exhibitions.

took our kids to see the permanent exhibition.. really interesting history of motion pictures, web, animation and a huge collection of movies. various how they did it segments, very multilayered experience. Comfy sit down spots for parents and plenty of helpful staff.. a lot of dual games and big screens, and historically interesting stuff from the early days of pc's and the web.

go and see...

Approximate cost: $regular