Blake Lively blew off the ball for her beau. Sources tell us the “Gossip Girl” beauty — who was the belle of the Metropolitan Museum of Art’s Costume Institute Gala last year — passed on attending Monday so she could go on a lengthy romantic trip with boyfriend Ryan Reynolds.

Beginning the last weekend of April, an insider says Lively and Reynolds, who’ve been together seven months, jetted to Napa Valley, where they stayed at the world-class Auberge du Soleil luxury resort and restaurant in Rutherford, Calif.
The couple then headed to San Francisco, where their activities included an intimate dinner at Charles Phan’s revered Vietnamese restaurant, Slanted Door. The leggy Lively and the abs-fabulous Reynolds also took time to stroll the city’s artsy Red Light District. They then made a brief stop in Los Angeles before traveling to Reynolds’ hometown of Vancouver. Our source points out that the lovebirds were visiting Reynolds’ family the night of the Met Ball on May 7.
Instead of walking the red carpet at Vogue editor Anna Wintour ’s haute happening, Lively, 24, and Reynolds, 35, ate dinner with one of Reynolds’ four brothers and his wife at Asian restaurant Blue Ginger, in Nanaimo on Vancouver Island.
They stayed overnight and returned to the mainland the next day. According to the insider, Lively and Reynolds stayed at the Coast Hotel in Vancouver, but have since relocated to Parksville in British Columbia to continue the more-than-two-week idyll.
Fashion insiders were surprised Lively skipped the Met Ball, since the style- and shopping-obsessed actress was the hit of last year’s party. The blond bombshell is the face of Chanel Mademoiselle handbags and attended last year’s soiree on the arm of the French fashion house’s creative director, Karl Lagerfeld.
Our first source says Lively’s absence from the fashion extravaganza is a sign that she has really fallen for Reynolds. A second source notes that Lively would have been more than welcome at the “Oscars of the East Coast,” but decided on the low-key vacation with Reynolds instead.
“Anna loves her,” notes the insider. Lively also missed the Cinema Society screening of her film “Hick” here on May 3, because she was traveling. She and Reynolds have become increasingly serious during their seven-month courtship. After shopping for homes in Westchester and Connecticut together, Lively recently purchased a $2 million estate in Bedford Hills, N.Y.
Our initial source says Reynolds has been spending a lot of time at Lively’s new pad, and also “gets along great with Blake’s [half] sister Robyn .”A spokeswoman for Lively did not respond to our request for comment by deadline.