How to ask if someone is ready


I think I can ask something like もう学校に行く用意はできてるの for "Are you ready to go to
school yet".  
I was wondering what is the most natural way to simply ask "Are you ready
yet?". E.g. the wife is in the bathroom and you are just about to go out to
the movies together. Can I just shorten this to もう用意ができてるの. To me it sounds
formal. More like "did you make preparations yet" rather than "are you ready
(to go)".  
Maybe I can just ask もうできてるの？ Would that be understood?




> What is the most natural way to simply ask "Are you ready yet?".

A quick search on
[Weblio](http://ejje.weblio.jp/sentence/content/are+you+ready) suggests
[準備](http://ejje.weblio.jp/sentence/content/%E6%BA%96%E5%82%99) like in
`もう準備はいいか?` or `もう準備できた?`.

Of course there are other ways in which "are you ready" may appear and it will
depend greatly on context. Asking a student if he/she is ready for an exam can
be done with either `試験の準備はいいか?` as well as `試験、大丈夫?`. The former implies
there are things to be arranged beforehand, while the latter asks if the
student is confident.




> What is the most natural way to simply ask "Are you ready yet?".

A quick search on
[Weblio](http://ejje.weblio.jp/sentence/content/are+you+ready) suggests
[準備](http://ejje.weblio.jp/sentence/content/%E6%BA%96%E5%82%99) like in
`もう準備はいいか?` or `もう準備できた?`.

Of course there are other ways in which "are you ready" may appear and it will
depend greatly on context. Asking a student if he/she is ready for an exam can
be done with either `試験の準備はいいか?` as well as `試験、大丈夫?`. The former implies
there are things to be arranged beforehand, while the latter asks if the
student is confident.

