LIFE NOT YUMMY FOR HASSLED HAILEY

Breakdown fears as walls close in on her & Justin

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FASHION model Hailey Bieber should be on top of the world after scoring her first Vogue magazine cover ― but pals fear the usually grounded gal is coming apart at the seams and headed for a catastrophic breakdown.

Sources say Hailey, 28, is reeling under the weight of digital criticism amid questions and concerns over her husband 31-year-old Yummy singer Justin Bieber - who appears to be selfdestructing in public view.

Busy cover girl and beauty mogul Hailey Bieber says she's still adjusting to motherhood