Keith Urban doesn't need to rely on the good folks at Hallmark to show his love for Nicole Kidman. The highlight-happy country crooner sent Valentine's Day wishes to his expectant spouse, who is currently taking it easy Down Under, as he belted out his hit ditty, "Got It Right This Time," during an encore at his Madison Square Garden show Wednesday night, reports People. "It's Valentine's Day here tomorrow," Urban told the crowd, "but today it's already Valentine's Day in Australia."

Is Jessica Biel getting something sparkly nestled in a little blue box on V-Day? The New York Daily News reports Justin Timberlake, who recently visited his newly blond girlfriend in London, was spotted browsing the baubles at Tiffany's late last week.

In other gift news, Leonardo DiCaprio doesn't have to worry about forking over a fortune to make squeeze Bar Refaeli happy on this, the most marketing-driven of all holidays. "I don't need a big bouquet of flowers," the leggy looker tells the paper. "Maybe just one flower that you picked out on the street. Just write a card -- no gifts, no dinner. I like simple things."

Paris and Kristin Cavallari at Pure nightclub in Las Vegas on Feb. 12

Paris Hilton will turn another year older this weekend, and while age likely won't bring her wisdom, it may bring something else -- a little more girl-on-girl action. On the heels of her alleged make-out session with Elisha Cuthbert (denied all around), the attention-dependent starlet, who turns 27 on Sunday, cozied up to fellow fame hankerer Kristin Cavallari during a bash at Pure nightclub in Las Vegas on Tuesday night, claims PageSix.com. It seems that while little brother Barron was still scrubbing the ink off his fingers following his booking for DUI, Paris was purportedly going lip-to-lip with the "Laguna Beach" blonde. "Kristin really, really likes and respects Paris," a source tells FoxNews.com. "She even seems to be following in her footsteps as the new perennial partygirl." Still, by Thursday night, Hilton had turned her attentions to "an unidentified tall, balding man," a spy tells Us, claiming she was "holding hands and kissing" the mystery chrome-domer. No word on who Paris will have by her side on her birthday, which she plans to mark in her usual quiet and benevolent way: The would-be philanthropist will strip down to her lingerie for a Sin City performance with the Pussycat Dolls.

Speaking of birthdays, Rihanna rang in her 20th with flying confections and a serenade. People reports the "Umbrella" chanteuse got into a cupcake fight while celebrating at Los Angeles hot spot Les Deux. "There was frosting all over Rihanna's face," a spywitness tells the mag, "and the group was hysterically laughing to the point of almost tears." Airborne icing wasn't the only sweet moment of the night. Rihanna's rumored beau Chris Brown performed an a cappella rendition of "Happy Birthday," which had guests -- well-wishers included Kanye West and Wilmer Valderrama -- on their feet. According to the insider, the musical pair appeared "very cozy all night." It was much the same on Grammy night, when Rihanna and Brown kept close during a post-awards bash. "They were touching and whispering in each other's ears," a mole tells the New York Daily News.

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