U.K. pop act Lily Allen has cancelled her May-June U.S. tour, excluding performances at this year's Coachella and Bonnaroo music festivals, among several others.

Allen revealed the news earlier today (April 16) via her Myspace blog.

Allen joked that the reason for canceling her tour "is because my mummy and daddy are very rich, and I have never been in a position where I have never actually had to do any hard work before."

Allen then went on to say that after touring for more than a year, she is "tired," and believes her live show of late has been sub-par. She notes that up until this tour, she has "fulfilled every commitment." Allen added that she's been "getting really drunk" recently, and has become "so nervous about doing bad shows."

Wrote Allen, "I am not falling apart at the seems, I am not suffering with exhaustion, I am not pregnant, and I am not going to rehab. I will be here in America, promoting the album and also starting to write the second album, which I am beyond excited about."

A spokesperson for Allen tells Billboard.biz that the approximately 10 cancelled shows will be rescheduled for this fall, and that a re-routing for the tour is expected to locked down later this week. Along with festival shows and scattered dates in Seattle, Los Angeles, New York and Charleston, S.C., the singer is scheduled to perform tonight (April 16) on "The Tonight Show with Jay Leno," and "The Ellen DeGeneres Show" on April 18.

Lily Allen is booked by Marty Diamond at Little Big Man/Paradigm.

Here are Lily Allen's current U.S. tour dates:

April 29: Indio, Calif. (Coachella Valley Music and Arts Festival)
May 13: Seattle (Everett Events Center -- KBKS 106.1 Girls Night Out)
May 15: Los Angles (the Wiltern)
June 1: Charleston, S.C. (Center Stage at the Plex -- 95SX Listener Appreciation Show)
June 12: New York (Roseland Ballroom)
June 15: Manchester, Tenn. (Bonnaroo Festival)