photo by: Courtesy of Karla Knudson

At the 46 Mommas event in Boston on Sunday, Lawrence office manager Karla Knudson got her head shaved in honor of her 17-year-old daughter, Annika, who had cancer in 2009. Knudson raised more than $2,500 for the St. Baldrick's Foundation, the largest private funding supporter of childhood cancer research in the U.S. Knudson is pictured shortly before going under the razor.

photo by: Courtesy of Karla Knudson

At the 46 Mommas event in Boston on Sunday, Lawrence office manager Karla Knudson got her head shaved in honor of her 17-year-old daughter, Annika, who had cancer in 2009. Knudson raised more than $2,500 for the St. Baldrick's Foundation, the largest private funding supporter of childhood cancer research in the U.S. Knudson is pictured with her head almost shaved.

photo by: Courtesy of Karla Knudson

At the 46 Mommas event in Boston on Sunday, Lawrence office manager Karla Knudson got her head shaved in honor of her 17-year-old daughter, Annika (pictured in photo displayed at event), who had cancer in 2009. Knudson raised more than $2,500 for the St. Baldrick's Foundation, the largest private funding supporter of childhood cancer research in the U.S.

At the 46 Mommas event in Boston on Sunday, Lawrence office manager Karla Knudson got her head shaved in honor of her 17-year-old daughter, Annika, who had cancer in 2009. Knudson raised more than $2,500 for the St. Baldrick's Foundation, the largest private funding supporter of childhood cancer research in the U.S. The event features 46 mothers (pictured) of childhood cancer survivors going bald to raise money for cancer research.