If you want to look stylish in a traditional dress, then you can try these ideas.
You can also take ideas from Nora Fatehi's desi look sarees.
If you are newly married and this is your first Chhath, then you can choose a pastel colored red border heavy zari work saree like Nora.
Every color is considered auspicious, hence for Chhath Puja, choose a light fabric saree in Banarasi pattern instead of a heavy one and wear a contrast color blouse with it.
If you want to choose some other traditional outfit instead of saree, then go for traditional floor length kurti.
If you are looking for a lighter option of saree, then Organza Chiffon saree will also look good on this occasion.
You can wear red, orange, blue, pink and green colored sarees during Puja. These colors are both suitable and auspicious.
You can also wear floral design chiffon saree like Nora.
Shimmery saree is trending now a days. So you can also wear pink glitter Shimmery saree.