It was a weekend of weddings. Not only did hotel heiress Nicky Hilton say "I do" to her millionaire boyfriend, Todd Meister, in a surprise ceremony, but another hot Hollywood couple made the leap to marital bliss.

She plays Ben Stiller's mother in the upcoming movie, "Meet the Fockers," and now, Barbara Streisand has a brand new daughter-in-law of her own. This weekend in a super-secret ceremony, Streisand's step-son, Josh Brolin, married his beautiful fiancé, Oscar-nominee Diane Lane.

Us Weekly's Dina Sansing told us the nuptials took place on Brolin's 97-acre ranch in picturesque San Luis Obispo, California. "It was an extremely private affair," Sansing said.

The couple got engaged July 4, 2003, after Streisand played matchmaker. And Lane was still gushing when she sat down with "Extra" months ago and told us what she felt like when Brolin proposed. "I fell down, I really fell down," she said then.

Meanwhile, we also uncovered a photo of Nicky Hilton and new hubbie Todd, signing their wedding certificate. The pair shocked Hollywood by exchanging vows in the wee hours Sunday morning in Las Vegas.

The Hiltons tell us they are, "Delighted about the marriage," and Nicky's sister, Paris, seems to be all smiles, telling us, "I'm very happy for her."

The newlyweds have been spotted in Malibu, but there's no word yet on where they might honeymoon.

And finally, it looks like Jennifer Lopez and Marc Anthony can relax. Friday, the couple learned he's not the father of Elizabeth Leyva's baby. Leyva had filed a paternity suit against Anthony claiming he'd fathered her baby boy.

Leyva claims she met the pop star in 1999 when she was just 16 and that their affair was no one-night stand, but the latest lab results clear Anthony -- for the second time; his attorney released a statement saying, "After more than a year of false accusations and harassment, Marc looks forward to putting this episode behind him and moving on with his life."