Kanto Routes 13,
14, 15, and Mt. Moon
You only get it by breeding Chansey.
You need to breed Chansey.
You cant catch a happiny you have to breed a Chansey while the Chansey is holding a luck incense.
If your Wigglytuff/Jigglypuff (which are you saying?) is a male, then yes, you can. :) However, you will get a chansey or a happiny (if you give your chansey an odd incense), and not an igglybuff.
To get a Lucky Egg in Pokemon HeartGold (This goes for Pokemon SoulSilver as well), you must find a Chansey in the wild that is holding it. Chanseys are hard to find in Pokemon HeartGold and SoulSilver so you'll have to wait and listen to Professor Oak's Radio Show to know if it is in swarm (Meaning you can find a lot of them on the certain route Oak's Show told you about). To know for sure if a Chansey is holding a Lucky Egg, have a Pokemon that knows the Ability "Frisk", such as a Stantler. Put it into the first slot in your party. When you go into battle and encounter a Chansey, "Frisk" will tell you what it is holding. If nothing happens, then that means Chansey isn't holding anything.
chansey is but it can be hard to find
you need to find a Pokemon with sweet scent then go to safari zone go to last grass before you can get the surf then use it find a chansey if you find chansey when using sweet scent try catch easily
Wild Chansey can sometimes hold that item to find Chansey go to the safari zone.
You can find Chansey in the Safari Zone in Fuchsia City. Though, it is incredibly hard to find. It is a about a one percent chance to find it.
you cant find celebi in soulsilver
You cannot Find Happiny but you can breed Chansey.
First, head over to Lavender Town. From there, head south until you need to turn left. Instead of turning left, go straight ahead until you need to use cut. Use cut on a bush and search in that grass patch. You will find a Chansey there.