Besides trading and hacking, level up Kirlia to level 30.
kirlia evolves into gardevoir at lv. 30
You can catch a Kirlia and evolve it into Gardevoir at Lv. 30.
Gardevoir isn't in Platinum as far as I know.
you cant get gardevoir but you can catch either ralts or kirlia and evolve it int gardevoir(ralts to kirlia to gardevoir to gallade
there are two trainers in stark mountain both of them have a gardevoir
Victory Road
You can see Gardevoir by getting ralts then evolving it to kirlia at lvl 20 then to gardevoir at lvl 30
ralts evolves into kirlia can be found on rout 212 by the mansion. kirlia will evolve into either gallade or gardevoir hope this helps
you need a ralts which you can find by floweroma town when you have a pokeradar
It is not possible to answer the question without knowing the move sets.
gardevoir
Gardevoir is 106.7 lbs.