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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                  SCHEDULE 13G


                    UNDER THE SECURITIES EXCHANGE ACT OF 1934

                               (AMENDMENT NO. 3 )*


                              Lamar Advertising Co.
                              ---------------------
                                (Name of Issuer)

                     Common Stock, $.001 par value per share
                     ---------------------------------------
                         (Title of Class of Securities)

                                    512815101
                                    ---------
                                 (CUSIP Number)

                                 August 31, 2003
                                 ---------------
             (Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:

[X] Rule 13d-1(b)
[ ] Rule 13d-1(c)
[ ] Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's
  initial filing on this form with respect to the subject class of securities,
  and for any subsequent amendment containing information which would alter the
  disclosures provided in a prior cover page.


The information required in the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the Securities Exchange Act of
1934 ("Act") or otherwise subject to the liabilities of that section of the Act
but shall be subject to all other provisions of the Act (however, see the
Notes).


                               Page 1 of 4 pages


                                SCHEDULE 13 G


CUSIP No.    512815101
-------------------------------------------------------------------------------

1.    Names of Reporting Persons.
      I.R.S. Identification Nos. of above persons (entities only).

      A I M Management Group Inc., on behalf of itself and its wholly-owned
      subsidiaries, A I M Advisors, Inc. and A I M Capital Management, Inc.

      I.D. No. 74-1881407

-------------------------------------------------------------------------------
2.    Check the Appropriate Box if a Member of a Group (See Instructions)

                                                                       (a) [ ]
                                                                       (b) [ ]
-------------------------------------------------------------------------------
3.    SEC Use Only
-------------------------------------------------------------------------------
4.    Citizenship or Place of Organization

      Delaware
-------------------------------------------------------------------------------
Number of Shares             5.   Sole Voting Power             4,246,450
Beneficially Owned by   -------------------------------------------------------
Each Reporting Person        6.   Shared Voting Power                  --
With                    -------------------------------------------------------
                             7.   Sole Dispositive Power        4,246,450
                        -------------------------------------------------------
                             8.   Shared Dispositive Power             --
-------------------------------------------------------------------------------
9.    Aggregate Amount Beneficially Owned by Each Reporting Person

      4,246,450
-------------------------------------------------------------------------------
10.   Check if the Aggregate Amount in Row (9) Excludes Certain Shares
      (See Instructions)

-------------------------------------------------------------------------------
11.   Percent of Class Represented by Amount in Row (9)

      4.9%
-------------------------------------------------------------------------------
12.   Type of Reporting Person (See Instructions)

      HC
-------------------------------------------------------------------------------


                               Page 2 of 4 pages


                                SCHEDULE 13 G


Item 1(a)   NAME OF ISSUER:
            ---------------
            Lamar Advertising Co.

Item 1(b)   ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:
            ------------------------------------------------
            5551 Corporate Blvd.
            Baton Rouge, LA 70808

Item 2(a)   NAME OF PERSON FILING:
            ----------------------
            A I M Management Group Inc.

Item 2(b)   ADDRESS OF PRINCIPLE BUSINESS OFFICE:
            -------------------------------------
            11 Greenway Plaza, Suite 100
            Houston, Texas 77046

Item 3      TYPE OF REPORTING PERSON:
            -------------------------
            Parent Holding Company, in accordance with section 240.13d-1(b)(1)
            (ii)(G)

Item 4(a)   AMOUNT BENEFICIALLY OWNED AS OF AUGUST 31, 2003:
            ------------------------------------------------
            4,246,450

Item 4(b)   PERCENT OF CLASS:
            -----------------
            4.9%

Item 4(c)   NUMBER OF SHARES AS TO WHICH THE PERSON HAS:
            --------------------------------------------
            (i)   Sole power to vote or to direct the vote:           4,246,450
            (ii)  Shared power to vote or to direct the vote:               N/A
            (iii) Sole power to dispose or to direct the
                  disposition of:                                     4,246,450
            (iv) Shared power to dispose or to direct the
                 disposition of:                                            N/A

Item 5      OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:
            ---------------------------------------------
            This statement is being filed to report the fact that as of August
            31, 2003, the reporting person has ceased to be the beneficial owner
            of more than five percent of the class of securities.

Item 6      OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON:
            ----------------------------------------------------------------
            N/A


                               Page 3 of 4 pages



Item 7     IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED
           ------------------------------------------------------------------
           THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY:
           -------------------------------------------------------------
           A I M Advisors, Inc. and A I M Capital Management, Inc., Investment
           Advisers registered under Section 203 of the Investment Advisers Act

Item 8     IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:
           ----------------------------------------------------------
           N/A

Item 9     NOTICE OF DISSOLUTION OF A GROUP:
           ---------------------------------
           N/A

Item 10    CERTIFICATION:
           --------------
           By signing below I certify that, to the best of my knowledge and
           belief, the securities referred to above were acquired and are held
           in the ordinary course of business and were not acquired and are not
           held for the purpose of or with the effect of changing or
           influencing the control of the issuer of the securities and were not
           acquired and are not held in connection with or as a participant in
           any transaction having that purpose or effect.

           SIGNATURE:
           ----------
           After reasonable inquiry and to the best of my knowledge and belief,
           I certify that the information set forth in this statement is true,
           complete and correct.



                                            September 10, 2003
                                            ------------------
                                                   Date


                                            /S/KEVIN M. CAROME
                                            -----------------------------------
                                                      Signature


                                            Kevin M. Carome
                                            Senior Vice President, Secretary
                                            and General Counsel
                                            A I M Management Group Inc.
                                            -----------------------------------
                                                        Name/Title


**  Please call Jesse Frazier at (713) 214-4780 with questions regarding this
    filing.


                               Page 4 of 4 pages