CERTIFICATIONS PURSUANT TO SECTION 906
EX-99.906CERT
CERTIFICATION
R. Jay Gerken, Chief Executive Officer, and Frances M. Guggino, Chief Financial Officer of Legg Mason Partners Investment Series – Legg Mason Partners Growth and Income Fund (the “Registrant”), each certify to the best of his knowledge that:
1. The Registrant’s periodic report on Form N-CSR for the period ended October 31, 2006 (the “Form N-CSR”) fully complies with the requirements of section 15(d) of the Securities Exchange Act of 1934, as amended; and
2. The information contained in the Form N-CSR fairly presents, in all material respects, the financial condition and results of operations of the Registrant.
Chief Executive Officer | Chief Financial Officer | |||
Legg Mason Partners Investment Series – | Legg Mason Partners Investment Series – | |||
Legg Mason Partners Growth and Income Fund | Legg Mason Partners Growth and Income Fund | |||
/s/ R. Jay Gerken | /s/ Frances M. Guggino | |||
R. Jay Gerken | Frances M. Guggino | |||
Date: January 8, 2007 | Date: January 8, 2007 |
This certification is being furnished to the Securities and Exchange Commission solely pursuant to 18 U.S.C. § 1350 and is not being filed as part of the Form N-CSR with the Commission.