Jennifer Lopez quiet on pregnancy rumors

Sources close to Marc Anthony and Jennifer Lopez are buzzing that she's indeed expecting after years of in vitro, PAGE SIX reports.

Lopez is promoting her new album, "Brave," in London. Just before arriving at the Dorchester Hotel, Lopez faxed over a request for just the sort of things a mom-to-be might need - including two humidifiers, two fans, a room set at 80 degrees, Jo Malone candles, white or red roses, soft-baked chocolate chip cookies, sour cream and onion chips, regular chips, veggie platters, plain M&M's, sunflower seeds, Ritz crackers, Dentyne Ice gum, spicy brown mustard, mayonnaise, Smartwater, caffeine-free Coke and Red Bull. A rep for Lopez said she didn't know if the singer is pregnant.