How do you say

I have just bought a new dress, which is very beautiful.

..in Chinese?

我刚买了一件新衣服,非常漂亮。

wǒ gāng mǎi le yī jiàn xīn yī fú , fēi cháng piào liàng 。

How do you say "My friend and I are planning to go on a trip to Thailand, where we打算 stay for a month." in Chinese?