Wedding Dress

Hello everyone! So I recently went to go look for my dress alone with my aunt.. I didn't invite anyone to go with me because it was a last minute decision to go look at dresses. I had been looking online at dresses and I fell in love with this lace long sleeved dress. I called to find out how much the dress is and it was completely out of my budget (i'm paying for the dress myself we don't have any help for our wedding)... I decided I needed to go look in person and I fell in love with the first dress I put on. It was the same style I wanted but without the sleeves... I had my grandmother who raised me so she's technically my mother figure. She seemed like she didn't like it because she like the style of the long lace sleeved dress I had showed her I liked.. I personally feel the same I really liked that dress I saw a picture of but I have never tried it on and haven't seen it in person.. My friend told me I should just go take a look at it to see my real feelings for it, but what if I love it and I know I can't get it? My feelings for the long sleeved lace dress is making my feelings for my actual dress change. What do you ladies suggest?