How do you shop for you toddler?

I have a 17 month old daughter and I do admit that I love shopping, especially for clothing for her, its just became a habit I guess. I usually go to The Children's Place, Old Navy,etc. and buy her a wardrobe for each season. Clothing doesn't fit right now from one season to the next because she is growing so rapidly, but I have found that The Children's Place jeans fit longer than most brands that I buy ( I bought her some jeans from there in Sept. and they are just now getting to short, but they fit fine in the waist. I usually buy her a good selection of bottoms (shorts,Capri's, jeans, etc) and tops, that way I can mix and match and she will have plenty of a selection. I go to thrift shops and buy "play clothes" to get in the sand box and play around the house in. My mother in law thinks that I buy her to many clothes. I respect her opinion, but she constantly criticizes me for it. I have had bad experiences with Walmart clothing, I have found that it stains easily and the bottoms don't fit long on my daughter, so I really don't shop there for clothing, however she says that I shouldn't be "spending so much much money" on clothes from The Children's Place, Old Navy, etc. places like that and that she thinks that I simply feel like my daughter is "to good" for walmart clothing, which is totally not the case. I find better deals at the Children's Place than Walmart ( Jeans are 2 for 22$, tanks are 3 for 15$ etc.) and I feel its better quality clothing for the money. The Children's Place was having a sale recently when I went Spring/Summer shopping so I really racked up, I bought her like 15 bottoms and around 20 tops for around 200-250$, plus 2 pairs of flip flops and two pairs of sandals, I thought it was a good deal, my MIL thought I was crazy!!!What do you guys think? How and where do you shop for your toddlers? I have clothes for her to go out in and clothes to play in, but how do you moms do it?