Catherine Gives Mary All The Right Advice On Her Second Wedding Day in 'Reign' Clip

While no one can actually replace Francis, we still can’t help but be happy about Mary’s second wedding on Reign tonight!

In the episode, Catherine (Megan Follows) reunites with her former daughter-in-law (Adelaide Kane) in Scotland and will be by her side for her and Lord Darnley’s (Will Kemp) nuptials — even giving her some much needed and required advice.

Meanwhile, Elizabeth (Rachel Skarsten) frantically tries to salvage England’s power.

Reign airs TONIGHT @ 9PM ET/PT on The CW.