This week, the pair captivated TikTok in an attempt to crack the case of the mysterious pink drink spotted in the background of their partners' bachelor trip photos.

The pink liquid that Christine and Janelle are often seen holding in Instagram photos is a weight loss drink supplement created and sold by Plexus, a multi-level marketing company.

Like longtime favorites Aperol and Campari, the viral pink liquor is mixed with prosecco and sparkling soda water to make a refreshing summer spritz. TikTok creators travelling in Europe are showing ...

To promote the drink, Dunne posed for plenty of pink-hued photos, such as this one Dunne (seen here, L, at age 2 with sister Julz, R) says she grew up loving the sweet treat ...