The casts' ages shocked me?

I was reading an article that said that Selling Sunset newcomer, Chelsea, is only 29 years old. My jaw was on THE GROUND. I definitely thought she'd be older... So it got me wondering how old everyone else is... here you go. You're welcome.

Chelsea: 29 (!!! I would have said like late 30s?)

Chrishell: 40

Heather: 34

Christine: 33

Mary: 41

Maya: 40

Amanza: 45 (amazing, but wanted more of her this season)

Davina: 44 (this shocked me too? I would have guessed younger)

Emma: 30 (kinda thought she'd be like mid 30s?)

Vanessa: 43

Brett & Jason: 45