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EXHIBIT 31 CERTIFICATIONS I, Greg H. Weaver, certify that: 1. I have reviewed this annual report on Form 10-K of Pacific Sunwear of
California, Inc.; 2. Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to
make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by
this annual report; 3. Based on my knowledge, the financial statements and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of
the registrant as of, and for, the periods presented in this annual
report; 4. The registrants other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in the Exchange Act Rules 13a-15(e) and 15d-15(e)) for the
registrant and have:  a)
    
    Designed such disclosure controls and procedures, or
caused such disclosure controls and procedures to be designed
under our supervision, to ensure that material information
relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities,
particularly during the period in which this annual report is
being prepared;b)
    
    Evaluated the effectiveness of the registrants
disclosure controls and procedures and presented in this report
our conclusions about the effectiveness of the disclosure controls
and procedures, as of the end of the period covered by this report
based on such evaluation; andc)
    
    Disclosed in this report any change in the registrants
internal control over financial reporting that occurred during the
registrants most recent fiscal quarter (the registrants fourth
fiscal quarter in the case of an annual report) that has
materially affected, or is reasonably likely to materially affect,
the registrants internal control over financial reporting; and 5. The registrants other certifying officer(s) and I have disclosed,
based on our most recent evaluation, to the registrants auditors and the
audit committee of the registrants board of directors (or persons
performing the equivalent functions):  a)
    
    All significant deficiencies and material weaknesses in
the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the
registrants ability to record, process, summarize and report
financial information; andb)
    
    Any fraud, whether or not material, that involves
management or other employees who have a significant role in the
registrants internal control over financial reporting. Date: March 23, 2004 /s/ Greg H. Weaver




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I, Carl W. Womack, certify that: 1. I have reviewed this annual report on Form 10-K of Pacific Sunwear of
California, Inc.; 2. Based on my knowledge, this annual report does not contain any untrue
statement of a material fact or omit to state a material fact necessary to
make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by
this annual report; 3. Based on my knowledge, the financial statements and other financial
information included in this annual report, fairly present in all material
respects the financial condition, results of operations and cash flows of
the registrant as of, and for, the periods presented in this annual
report; 4. The registrants other certifying officer(s) and I are responsible for
establishing and maintaining disclosure controls and procedures (as
defined in the Exchange Act Rules 13a-15(e) and 15d-15(e)) for the
registrant and have:  a)
    
    Designed such disclosure controls and procedures, or
caused such disclosure controls and procedures to be designed
under our supervision, to ensure that material information
relating to the registrant, including its consolidated
subsidiaries, is made known to us by others within those entities,
particularly during the period in which this annual report is
being prepared;b)
    
    Evaluated the effectiveness of the registrants
disclosure controls and procedures and presented in this report
our conclusions about the effectiveness of the disclosure controls
and procedures, as of the end of the period covered by this report
based on such evaluation; andc)
    
    Disclosed in this report any change in the registrants
internal control over financial reporting that occurred during the
registrants most recent fiscal quarter (the registrants fourth
fiscal quarter in the case of an annual report) that has
materially affected, or is reasonably likely to materially affect,
the registrants internal control over financial reporting; and 5. The registrants other certifying officer(s) and I have disclosed,
based on our most recent evaluation, to the registrants auditors and the
audit committee of the registrants board of directors (or persons
performing the equivalent functions):  a)
    
    All significant deficiencies and material weaknesses in
the design or operation of internal control over financial
reporting which are reasonably likely to adversely affect the
registrants ability to record, process, summarize and report
financial information; andb)
    
    Any fraud, whether or not material, that involves
management or other employees who have a significant role in the
registrants internal control over financial reporting. Date: March 23, 2004 /s/ Carl W. Womack