Fans noticed a difference in Jessica Simpson 's face when she walked several recent red carpets, and a top plastic surgeon exclusively tells RadarOnline.com what she could have done to result in her unrecognizable appearance .

The I Wanna Love You Forever songstress, 45, had cheeks that looked higher and fuller, with a line-free forehead. Simpson's lips continue to look as plump as ever , despite the entrepreneur claiming years ago she tried lip filler and didn't like the results. Article continues below advertisement

Mid-Face Filler Tap Here To Add Radar Online as A Trusted Source

"Jessica’s upper-cheek area appears prominently contoured and elevated, a look typically associated with mid-face filler or volume restoration," Dr. Raffi Hovsepian , a Beverly Hills triple-bo

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