The sophomore from Upland, Calif., joins the Tigers after playing the 2005 season for the Islanders, where she started for TAMUCC at second base during the 42-11 campaign, the best record in school history, and a third-straight NCAA Regional berth.
"We are very pleased to add Shannon to our team," said Girouard. "She will add quality depth to our roster and challenge for playing time. She had an outstanding freshman campaign at Texas A&M-Corpus Christi and we hope she can continue to improve and produce for us at LSU."
Stein ranked second on the team with a .315 batting average, including seven doubles, three home runs and 26 RBIs on the season. In a doubleheader at No. 4-ranked Texas, she went 4-for-7 (.571) with three RBIs and a run scored as the Islanders split the pair of games.
A four-year high school letterwinner, Stein earned second-team all-CIF honors. As a senior, she was named the Baseline League Most Valuable Player after earning all-Baseline League honors for four years. Also a four-time Inland Valley All-Star selection, she was the 2001 Freshman of the Year. As a senior, she hit .580 with a .998 fielding percentage.
Adding international experience, she played for the California Lite 18-and-under team that was selected to represent the United States in the 2001 Women's International Softball Tournament in Shanghai, China.
The daughter of Martha and Noel Stein, Shannon has two brothers, Noel and John. The 19-year-old was born in San Bernardino, Calif., on May 30.