J.K.
HI V.,
Have there been any changes in your daughter's life that might make her want more attention from you? Is there a new baby around that she sees getting attention?
I wouldn't worry too much about it, to be honest. I wouldn't buy her any for her birthday, but you could let her have the ones that are in the house. Sometimes kids play situations that they can't really express in words. Maybe you should role play with her when she does this. For example when she says she's a pretend baby cuddle her in your arms and say "are you my special little baby girl?" and then shift it into how she's a big girl... You can say "look at all this hair you have baby!! Look at all these teeth you have baby!! Can you clap you hands...? I think you're the most special big girl I know!!" It doesn't have to be an elaborate thing just a few minutes of special time for her.
I think it's great that she's so resourceful to try to get what she needs!
Good luck!