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

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant þ
Filed by a Party other than the Registrant o

Check the appropriate box:

o   Preliminary Proxy Statement

o   Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o   Definitive Proxy Statement

þ   Definitive Additional Materials

o   Soliciting Material Pursuant to § 240.14a-11(c) or § 240.14a-12

AIM COUNSELOR SERIES TRUST, AIM GROWTH SERIES, AIM INVESTMENT FUNDS, AIM
INVESTMENT SECURITIES FUNDS, AIM SECTOR FUNDS, AIM TAX-EXEMPT FUNDS and
AIM VARIABLE INSURANCE FUNDS

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):
þ	No fee required.
o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

1) Title of each class of securities to which transaction applies:

2) Aggregate number of securities to which transaction applies:

3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

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o   Fee paid previously with preliminary materials.

o   Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

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PLEASE VOTE NOW
VOTING HELPS TO LOWER OVERALL PROXY COSTS AND ELIMINATES PHONE CALLS

Dear Shareholder:

We recently mailed you proxy materials relating to a proposal to be voted on at a Special Meeting of shareholders of the Van Kampen Funds scheduled for May 11, 2010. To date, our records indicate we have not received your vote.

You are being asked to approve the transitioning of the Van Kampen (“VK”) Funds of which you own shares to a new fund family. Specifically, as a shareholder of one or more VK Funds identified in the Notice of Joint Special Meeting of Shareholders previously mailed to you, you are being asked to consider and approve an Agreement and Plan of Reorganization under which the assets and liabilities of your VK Fund will be transferred to a new fund on the Invesco mutual fund platform with substantially the same investment objectives, principal investment strategies and risks as the corresponding VK Fund.

The Board of Directors/Trustees of each of the VK Funds has unanimously approved and
recommends that you vote “FOR” the proposal.

Please vote using one of the following four options:

1.	CALL TOLL-FREE 1-800-708-7958
	Call toll free 1-800-708-7958 to vote with a live proxy services representative. Please call Monday through Friday 9:00 AM to 11:00 PM (ET), and Saturday from 12:00 Noon to 6:00 PM (ET). The estimated call duration is less than 2 minutes.
2.	VOTE ONLINE
	Refer to your proxy cards for the control number and security code. Please enter the website www.proxy-direct.com and follow the instructions.
3.	VOTE BY TOUCH-TONE TELEPHONE
	The toll free number is 1-800-254-4997. Please have your proxy card in hand to access your control number and security code. Please call the number and follow the instructions.
4.	VOTE BY MAIL
	Mark your vote, sign and date the enclosed proxy card(s) and return in the enclosed postage paid envelope.

You may receive multiple proxy kits in separate envelopes or several cards within one envelope. It is important that you record a separate vote for each proxy card received.

If you have any questions about the proposals, you may contact Van Kampen Client Relations toll free at 1-800-231-2808. Thank you for voting.

PLEASE VOTE NOW
VOTING HELPS TO LOWER OVERALL PROXY COSTS AND ELIMINATES PHONE CALLS

Dear Shareholder:

Van Kampen recently mailed you proxy materials relating to a proposal to be voted on at a Special Meeting of shareholders of the Van Kampen Funds scheduled for May 11, 2010. To date, the proxy tabulator has not received your vote.

You are being asked to approve the transitioning of the Van Kampen (“VK”) Funds of which you own shares to a new fund family. Specifically, as a shareholder of one or more VK Funds identified in the Notice of Joint Special Meeting of Shareholders previously mailed to you, you are being asked to consider and approve an Agreement and Plan of Reorganization under which the assets and liabilities of your VK Fund will be transferred to a new fund on the Invesco mutual fund platform with substantially the same investment objectives, principal investment strategies and risks as the corresponding VK Fund.

The Board of Directors/Trustees of each of the VK Funds has unanimously approved and
recommends that you vote “FOR” the proposal.

Please vote using one of the following four options:

1.	CALL TOLL-FREE 1-800-708-7958
	Call toll free 1-800-708-7958 to vote with a live proxy services representative. Please call Monday through Friday 9:00 AM to 11:00 PM (ET), and Saturday from 12:00 Noon to 6:00 PM (ET). The estimated call duration is less than 2 minutes.
2.	VOTE ONLINE
	Refer to your proxy cards for the control number and security code. Please enter the website www.proxy-direct.com and follow the instructions.
3.	VOTE BY TOUCH-TONE TELEPHONE
	The toll free number is 1-800-254-4997. Please have your proxy card in hand to access your control number and security code. Please call the number and follow the instructions.
4.	VOTE BY MAIL
	Mark your vote, sign and date the enclosed proxy card(s) and return in the enclosed postage paid envelope.

You may receive multiple proxy kits in separate envelopes or several cards within one envelope. It is important that you record a separate vote for each proxy card received.

If you have any questions about the proposals, you may contact Van Kampen Client Relations toll free at 1-800-231-2808. Thank you for voting.

Dear Van Kampen Shareholder,

You were recently mailed a reminder mailing package of proxy materials for your holdings in the Van Kampen funds. The proxy card(s) included in that package incorrectly identified the associated fund name as Van Kampen American Franchise Fund as opposed to your applicable holding(s). We are replacing that ballot(s) with the enclosed corrected ballot(s) and ask that you take this time to review and submit your vote.

If you would like to speak with a customer service representative who can answer any questions that you may have and who would also be able to take your vote, please call 1-800-708-7958.

We apologize for our oversight and the associated inconvenience to you. Your participation is critical to the success of this proxy campaign and we appreciate you taking the extra time to vote your shares.

Sincerely,
Computershare Fund Services