Carnie Wilson Crushing The Scales Again

The incredible inflatable Carnie Wilson, who just this past April faced surgery after her boob implants erupted, has ballooned back up to 300 pounds — again!

Photos obtained exclusively by The National ENQUIRER show the yo-yo diet poster girl looked as big as a house while walking through Las Vegas airport Oct. 13 — despite losing more than 100 pounds after lap-band surgery in 2012!

“Lap-band surgery is only a temporary fix,” said health and nutrition expert Dr. Stuart Fischer, author of “The Park Avenue Diet,” who has not treated the former host of "The Newlywed Game." “She’s obviously slipped back to extremely poor diet habits.”

In 1999, Carnie had “lifesaving” gastric bypass surgery, shed 150 pounds and later posed for "Playboy" magazine! But the former Wilson Phillips singer, daughter of Beach Boys leader Brian Wilson, piled on the pounds again, prompting her to have lap band surgery in 2012.

Doctors believe she’s regained all that weight and more — and warn that Carnie is courting death! “Yo-yo dieting is commonly associated with an increased risk of diabetes, cardiovascular disease and a compromised immune system,” said Dr. Art Mollen, who also has not treated Carnie.

Dr. Fischer added: “She’s put herself at risk for at least 65 different illnesses, including multiple cancers that specifically afflict women. She’s asking for a dinner date with the angel of death!”