Let $K$ be a connected compact Lie group,  $K^{\mathbb{C}}$ be  complexified Lie group of $K$.

Denote $Z(k)$ by the centralizer of k∈K and $Z^{\mathbb{C}}(k) $ be the complexified Lie group of $Z(k)$ .

Q: Does the homogeneous spaces  $K^{\mathbb{C}}/{{Z(k)}^{\mathbb{C}}}$ have a natural Kähler or sympletic structure?

My   interpretation is following:  
at the point $[Z(k)]\in K/Z(k)$ of $K/Z(k)$, ~~$T^*_{[Z(k)]}(K/Z(k))\cong {\text{Lie}K}^*/{{\text{Lie}{Z(k)}}^*}$,

 so  $T^*{(K/Z(k))}\cong T^*K/T^*{Z(k)}$,

Combined with $T^*{(K/Z(k))}\cong K^{\mathbb{C}} $ and $T^*{Z(k)}\cong {Z(k)}^{\mathbb{C}}  $.

We can get $ K^{\mathbb{C}}/{Z(k)}^{\mathbb{C}}\cong T^*{(K/Z(k))} $.
 
Hence $K^{\mathbb{C}}/{Z(k)}^{\mathbb{C}}$ have a canonical sympletic form.

Is it true???