Being Nikki is the sequel to Airhead and I'd say it's a pretty good attempt. Emerson now has to lead her life as Nikki and I really liked how she's taking things. I think if it were me, I'd totally have a break-down. I did think some of the loose plot lines were coming together quite well and some of the twists and turns WERE pretty good! Definitely worthy of Meg Cabot's style. 
 I sill feel like slapping Frida, especially after some of her behavior in this book and I really hope she grows up in the last novel, since Emerson certainly has. I like the relationship between Christopher and Nikki too but I found it cliche that he only decided about their relationship after Emerson's "death". 
 Ah, still. I do have some high hopes for the finale. It'd probably be a little young for my taste but I think if anyone can pull it off, Meg Cabot can.