'Bachelor' Sean Lowe, Catherine Giudici watched their proposal together for the first time

catherine-giudici-sean-lowe-wedding-plan.jpg Catherine Giudici, the brunette beauty who captured Sean Lowe's heart on the last season of "The Bachelor," is busy, busy, busy planning her wedding to Lowe, which will air live on ABC Sunday, Jan. 26 beginning at 8 p.m. ET/PT.

She recently Instagrammed the above picture with her 60-day challenge (since the wedding is 60 days away): 60 minutes of cardio, 60 minutes of quiet time, 60 minute workout, 6.0 small meals, 60 fam kisses -- doggie and boo. #countdownlowedown.

Also in preparation for the big day, Sean tweets that he and Catherine "just watched our finale together for the first time. And guess what... still have my letter." (Pictured below)

Awww. Could they be any cuter?

sean-lowe-letter-catherine-giudici-bachelor-finale.jpg

Photo/Video credit: Getty Images, Instagram, Twitter