It's my lady's birthday soon and I like treating her like a princess, what shal I get her?

She's my lil princess and i lov her with all ma heart, we've been together 5 years now, since i was 10 and she was 7, so I wanna do something special for her 13th birthday, I wanna get her somthin grown up because we've been talking about startin a famly in a few years when she's more mature lookin, so shall I get her a necklace and some flowers, what do you girls think?, she also like animals so I could get her one of them?