Invesco Energy Fund (IENAX) DEFA14A Additional proxy soliciting materials

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 Registrantþ
Filed by a Party other than the Registranto

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   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 NOW HELPS YOUR FUNDS LOWER OVERALL PROXY COSTS AND ELIMINATES PHONE CALLS

Dear Contract Owners:

We recently mailed you proxy materials relating to a proposal to be voted on at a joint special meeting of shareholders of certain Morgan Stanley Funds to be held on May 11, 2010. To date, our records indicate we have not received your vote.

You are being asked to approve the transitioning of certain Morgan Stanley (“MS”) Funds to a new fund family. These MS Funds were identified in the Notice of Joint Special Meeting of Shareholders previously mailed to you. Specifically, you are being asked to consider and approve an Agreement and Plan of Reorganization under which the assets and liabilities of your MS 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 MS Fund.

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

Please vote using one of the following three options:

1.	VOTE ONLINE
	Refer to your proxy cards for the control number and security code. Please enter the website www.proxyweb.com and follow the instructions.
2.	VOTE BY TOUCH-TONE TELEPHONE
	The toll free number is1-888-221-0697. Please have your voting instruction form in hand to access your control number (located in the box). Please call the number and follow the instructions.
3.	VOTE BY MAIL
	Complete, sign and date the enclosed proxy card(s) then return them 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.

If you have any questions about the proposals, you may contact Morgan Stanley Client Relations toll free at 1-800-869-6397. Thankyou for voting.

Venus MS INS — R1

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

Dear Contract Owners:

We recently mailed you proxy materials relating to a proposal to be voted on at a joint special meeting of shareholders of certain Van Kampen Funds to be held on May 11, 2010. To date, our records indicate we have not received your vote.

You are being asked to approve the transitioning of certain Van Kampen (“VK”) Funds to a new fund family. These VK Funds were identified in a Notice of Joint Special Meeting of Shareholders previously mailed to you. Specifically, 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 three options:

1.	VOTE ONLINE
	Refer to your proxy cards for the control number and security code. Please enter the websitewww.proxyweb.com and follow the instructions.
2.	VOTE BY TOUCH-TONE TELEPHONE
	The toll free number is1-888-221-0697. Please have your voting instruction form in hand to access your control number (located in the box). Please call the number and follow the instructions.
3.	VOTE BY MAIL
	Complete, sign and date the enclosed proxy card(s) then return them 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.

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

Venus VK LIT R1 BFS