Matthew McConaughey rang in the holidays by putting a rock on the finger of his girlfriend of five years, Brazilian model Camila Alves. 　　The 42-year-old actor shared his big decision by posting a message on his WhoSay account, "Just asked Camila to marry me, merry Christmas," along with a picture of the couple kissing passionately in front of the Christmas tree. 　　The star and his 28-year-old lady have two children together, Levi, 3, and Vida, who is 23 months.(Courtesy: Matthew McConaughey/WhoSay.com)