It’s a happy 28th birthday to Cabin Fever and Not Another Teen Movie quasi-hottie Cerina Vincent, whose best assets are available with a quick Google search. Cerina is also notable, by my best estimates, for introducing another spelling of the name Serena into the English lexicon. Someone call Guinness! Also, Ashton Kutcher turns 29 today, while Demi Moore’s breasts turn 13. Errr, allegedly…