To be fair, she's got an 11 month old baby. She probably looked in the mirror one day a while after he arrived and thought 'fuck me I love that kid but wow being a mum has aged me by about one hundred years!' Like i did when my DD was about 6 months old.
She's had something done but I don't know what. She's slimmer too and I think her hair style change makes her face look a different shape.
If in had her cash, I'd be in having all my (many) fat bits sucked out, eye bags sorted and god knows what else! Fair play to her. She still looks nice.