Tomorrow is Westminster’s Best in Show at the Garden. Today 2,500 kennels are barking that the top dog could be a British Skye Terrier. Owner, Mr. Marzolini, is Brazilian. Trainer, big with terriers, is California handler Gabriel Rangel, who showed 2010’s Scotch terrier winner Sadie. Skyes are laid-back, loyal, long, low and loving.

AT birth Clive Davis’ diaper must’ve been a cocktail napkin. This top music man knows from throwing a party. Saturday night, Grammy eve, his little Beverly Hilton bunch went from Miley Cyrus to Mariah Carey, Randy Jackson to Ryan Seacrest, Joan Rivers to Johnny Depp, Sting to Diddy. John Legend with the new wife, Kelsey Grammer with the newest wife. Tracey Ullman, big in the old funny days, to Katy Perry in sleeveless white and pearls, big in the new sexy nights.

Even the late Chris Farley’s brother. And Patti Smith entertained.

The centerpiece, with every star itchy to pose with him, was the losing Super Bowl hotshot Colin Kaepernick. The San Francisco 49ers quarterback was very pleasant and gracious. And sensing the hotel would serve the usual banquet-style precooked roasted Perdue job, he said grace before tackling it.

WHAT do Spike Lee’s wife, Tonya Lewis Lee, journalist/ex music exec James Hester and NY Knicks coach Mike Woodson have in common? A book. It’s “1 Pound a Day: The Martha’s Vineyard Diet Detox and Plan for a Lifetime of Healthy Eating.”

Hester co-wrote it following his best seller “21 Pounds in 21 Days.” The bear-size coach wanted to shrink to cub size. Tonya, a vegan stunner, big into health, records Woodson’s journey as of today on her Web site healthyyounow.com.

At Tonya’s house — over hummus, quinoa salad and babaganoush — (not the pastrami sandwich I craved) — they said supermodel Tyson Beckford’s hosting tonight’s party for them at Trump SoHo. Also Steve Harvey’s doing the diet. Also Wendy Williams, Robin Quivers, Usher’s mother. Spike Lee, not.

Breakfast is pureed collard, kale, chard, sweet potato, squash, zucchini, carrot, onion, garlic, spinach. With 1/2 gallon distilled water, boil 20 minutes, add spices, herbs, no salt. Have as much as you like all day. Cool to lukewarm. Every two hours there’s a special nutrients-laced drink. To know more, check Tonya’s Web site. And leave me alone. I’m still hunting the pastrami sandwich.

Hester: “There were 39 rejections before William Morris took this book.”

Tonya: “My body wants 10 pounds heavier, but I want it to take me to age 95. I always fought weight and couldn’t do the South Beach one more time. I cook meat for my family, but now I eat no fish, chicken, dairy, eggs, cheese or meat. Almond milk’s better than regular milk. I make chocolate-chip cookies with fake butter and egg substitute.

“Of course, I screw up all the time. My challenge is alcohol. So I do vodka gimlets because they’re low-carb.”

I KNEW Hollywood’s p.r. lady Ronni Chasen, but not who murdered her in 2010. I now know documentarian Ryan Katzenbach, who immortalized Amityville’s 1974 horror murders, is doing one on the killing of Ronni Chasen.

After examining 150,000 pieces of evidence, cops concluded it wasn’t done by anyone she knew, that the random act was committed by a bike-riding ex-con who needed money and tried to rob her. Alone, driving home from a movie premiere, her Mercedes stopped at a junction. She resisted and he shot her. He then killed himself.

Katzenbach says much about it hasn’t been released. He’s also mum on news that he’s making this.

THEATER District hangout Joe Allen’s branches are going kaput. It and sister eatery Orso in LA saying bye-bye. Miami and Paris branches also going poop. London’s open, but under different management. On West 46th it and Orso remain open . . .

Molly Sims staying nifty at Wayak Spa at Mexico’s Viceroy Riviera. Mayan scrubs, black lava treatment and a shaman to bless away negativity.

OUT for Valentine’s Day is attorney/photographer Morton Hamburg’s book “Commitment.” It’s how 37 couples like the Mandy Patinkins, Jerry Stiller and Anne Meara, “Iron Chef’s” Cat Cora and partner Jennifer, keep love alive. Morton’s wife is WOR radio’s Joan Hamburg. Ask how long they’re married, she says, “Forever.”

PRESIDENT Bush the junior just lost his dog. Should he get another, here are recommendations for a name. If it constantly wets the carpet, “Strom.” If it’s bitchy, “Leona.” Snarling mongrel? Try “Newt.” And if the puppy’s neutered, what else — “Gore.”

AT a restaurant diners behind Judge Judy discussed how they loved her on TV. Minutes after that group exited, one of its gentlemen returned, strode to a totally different table across from Judy and told some strange blonde: “I love your show.” The startled blonde, looking properly startled, sputtered: “But I don’t have a show.” He then left. Judy watched the whole drama.

Only in New York, kids, only in New York.