Ukranian model-turned-actress Milla Jovovich’s new movie, The Fourth Kind, debuts this weekend. But, she’s also working on another “fourth”–the fourth installment of the Resident Evil franchise.

Shortly after the star joined Twitter, she began posting from the set, giving fans a backstage pass to the action. “Wow, just finished a scene with Ali Larter and Wentworth Miller on a skiff approaching the huge ship. To say it’s cold is a joke. A bitter joke,” she writes, followed with, “Of course, Ali and I aren’t wearing much and to make matters worse Wenty is driving the boat himself and crashing it repeatedly! lol!”

Jovovich has had a long road getting back into shape for the movies after her 75-pound pregnancy weight gain. Jovovich said filming 2009′s The Perfect Getaway helped.  And, no doubt her busy schedule has, too. Jovovich also stars in The Fourth Kind, debuting this weekend, Resident Evil and two other movies all hitting in 2010.

Several stars have mommy makeovers after pregnancy, where the surgeon does a tummy tuck, lipo and a breast lift in combination or all at once to help with the body changes during pregnancy.

But, Jovovich says her tummy isn’t her trouble spot. When asked by the UK Times what she would change about her body, she said, “I’d have neck extension surgery, and I wouldn’t mind knee-shrinkers.”