UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES

EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): July 9, 2008

NUVEEN INSURED CALIFORNIA TAX FREE ADVANTAGE

MUNICIPAL FUND

(Exact Name of Registrant as Specified in its Charter)

Registrant’s telephone number, including area code: (312) 917-7700

                                                      Not Applicable                                                     

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[  ] Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

[  ] Soliciting material pursuant to Rule l4a-12 under the Exchange Act (17 CFR 240.l4a-12)

[  ] Pre-commencement communications pursuant to Rule l4d- 2(b) under the Exchange Act (17 CFR 240.14d-2(b))

[  ] Pre-commencement communications pursuant to Rule l3e-4(c) under the Exchange Act (17 CFR 240.l3e-4(c))

Item 8.01. Other Events.

On July 9, 2008, Nuveen Insured California Tax Free Advantage Municipal Fund issued a press release announcing that it intends to commence a private offering of Variable Rate Demand Preferred shares. The text of the press release is attached as Exhibit 99.1 to this Form 8-K and incorporated herein by reference.

Item 9.01. Financial Statements and Exhibits.

(d)   Exhibits

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: July 9, 2008

Exhibit Index