Joined by her hockey-playing hubby Mike Comrie, the "Lizzie McGuire" actress splashed around in a black one piece suit while her "Napoleon Dynamite" star sibling opted for a daring low-cut number as she hopped in the water.
When the superstar sisters aren't on a luxe Mexican holiday, they like to spend their time in the kitchen - this according to Haylie's boyfriend, Nick Zano, who says the twosome's culinary skills can't be topped.
?The girls are really into cooking so most of the time it?s going from house to house. The hottest restaurant in our neighborhood is like whoever?s kitchen! It?s great," he told OK! magazine, adding, ?Haylie cooks everything. She is an amazing cook and Hilary is an amazing baker."