Birthday Gift

Hi guys, I’m 17 in sixth form and my friend , whom I only became semi close with in sixth form, invited me to her 18th birthday party. She’s a twin, and both her and her twin went to the same secondary school as I ( although im pretty sure her twin doesn’t even know who I am). Her twin doesn’t go to our sixth form now.
So obviously the party is for both her and the twin, it’s a house party which will have a decent number of guests .
I’m really really broke right now, I don’t have a job lollll.
Is it rude if I show up with a gift for only my friend? Should I still bring something small for her twin? (Any suggestions if yes?)
Thanks guys, I just don’t want to come across as rude. ◡̈