You can cross "something blue" off the checklist.

Secretary of State Hillary Clinton visited her bride-to-be daughter Chelsea at her New York apartment on Tuesday, and GOSSIP has all the pictures for you.
Hillary, 62, wore a brilliant blue top as she entered Chelsea's apartment building flanked by security on both sides.

The wedding -- rumored to be set for New York's lavish Astor Estate on Saturday -- is expected to set Hillary and her hubby, former President Bill Clinton, back anywhere from $3 million to $5 million.

Chelsea, 30, is slated to marry her childhood pal, Goldman Sachs investment banker Marc Mezvinsky, 32, after a five-year courtship. Mezvinsky also has a political pedigree, as his mother Marjorie and father Edward both served in Congress.