She's a tall, slender woman, but I don't think she's too skinny, and I don't think she looks a lot thinner between this season and last (over the course of the series, maybe a bit, but the woman's also been working non-stop for 3 years it seems)

 Her face looks skinnier, but they seem to be accentuating her cheekbones with makeup more this season. If I look at Stana on The Talk, her face looks a little fuller. At the beginning of the season, they were also dressing her to look like Beckett had lost a lot of weight over the summer. I didn't notice this in Killshot, through (moreso makeup to make her look rundown and emotionally drained).

It's kind of like Nathan's weight. Doesn't really matter to me how plump/skinny they look. As long as they keep pulling out these great performances and shows! If it is a health issue (which I don't think it is in either case), then I would hope those close to them would take care of them!

That said, I'd be happy to send her a few of my lbs!