Brooke: Hello Abercrombie
Abercrombie & Fitch is a very popular clothing label. Texas Battle, who guest stars in season 3 of One Tree Hill, was the first African-American to appear in an Abercrombie & Fitch catalogue.
Also, when Brooke says this, she is referring to actor Sean Faris' character. Sean Faris was on Life As We Know It co-starring Jon Foster, who happens to be Sophia Bush's boyfriend (as of 2008) and was a model for Abercrombie and Fitch in Winter 2004.