Baby shower

I am 33 years old and pregnant with #3. My first 2 are 15 & 12, so there is a huge age gap with #3. I have absolutely NO baby items left My SO's mom is throwing the baby shower as this is his and her 1st baby in the family. I feel like I am too old to be asking for item for the baby since I'm on my own and grown up. I feel so stressed about doing the registry since I know most my friends can't afford much. Only person from my family that will be there is my mom and my kids. My SO will only have his mom and sister and BIL, then rest will be friends. Should I add big stuff anyways since Target gives you a discount to buy what's left? Anyone have any ideas or tips for the registry? There is just such a big change from 13 years ago when I had my last baby shower 😉😉 Thank you ladies!! My baby shower is Jan 30th and was thinking about this dress. Thoughts??!!