All are reputable and have reviews.  You can't go wrong with any of them.

Another provier who isn't listed there is Tasha who is a total doll and sexy as hell.
http://tashavegas.com/Home_Page.html

Suggestions

Thank you Sara.

Not sure about the non-smoking part.  You would need to ask each girl.  I consider petite 5'4" or less.

Ashley Jade  http://lvdelight.com/lasVegas_escorts/AshleyJade.9.htm

Angelina Amour http://lvdelight.com/lasVegas_escorts/AngelinaAmour.26.htm

Jamie Tyler  http://lvdelight.com/lasVegas_escorts/JamieTyler.37.htm

Kit Dubois  http://lvdelight.com/lasVegas_escorts/KitDubois.3.htm

Mary O'Malley  http://lvdelight.com/lasVegas_escorts/MaryOMalley.27.htm

Nikki Avalon http://lvdelight.com/lasVegas_escorts/NikkiAvalon.58.htm

Porn Star Sarah Blake  
http://lvdelight.com/lasVegas_escorts/SarahBlake.32.htm

Selena Scott http://lvdelight.com/lasVegas_escorts/SelenaScott.36.htm

Sheena Rey http://lvdelight.com/lasVegas_escorts/SheenaRey.55.htm

Sheridan  http://lvdelight.com/lasVegas_escorts/Sheridan.23.htm