Tahyna Tozzi is 19 and her sister (the prettier one) Cheyenne is 17.
Tahyna dates Reshad Strik her Blue Water High co-star
Cheyenne dates pro-surfer Taj Burrow (who is 27!!)
Tahyna is trying to crack the acting business whilst Cheyenne the modelling industry. Cheyenne was recently in quite a few shows at MAFW (Mercedes-Benz Australian Fashion Week)
Here are some pics of her at One Teaspoon and the MTV Aus awards.(Cheyenne)
@ LISA HO (MAFW O6)

credit (
www.vogue.com.au)
The other girl that was mentioned is Lara Bingle fellow model and shire chick.
Her and Cheyenne are in constant competition for the same campaigns, but Cheyenne outmatches her on the catwalk (Lara is 5ft5)
as you can see lara and cheyenne are very similar.
lara would have to be my fav though just cos we have the same name
cheyenne at mtv
lara bingle at mtv