Jamie-Lynn Sigler Joins 'Grey's Anatomy,' Will Play Doctor with MS

Jamie-Lynn Sigler To Play Doctor With MS On ‘Grey’s Anatomy’

Christina Applegate and Jamie-Lynn Sigler Candidly Share the 'Harsh Reality' Their Kids Face Navigating Their Moms' MS Diagnoses

Jamie-Lynn Sigler Recalls Nights She ‘Fell Apart, Terrified’ Fearing Her Son Beau 'Was Going to Die' (Exclusive)