Should I throw a baby shower?

My sister is pregnant with her 5th child! Due in June.

She’s an amazing mother to them all

BUT she just found out it’s a baby girl.

She has two girls who are the oldest (7.5 and 5.5) and then two boys who are the youngest. (3.5 and 1yo 2 in feb)

So it has been almost 6 years since she’s had a baby girl! Should I throw a shower? They thought they were done having babies so she has to start all

Over this time because she generously gave her stuff to another mother in need.