Lohan prepares to set sail from St. Barts. Plus: Miley & Liam, Channing Tatum, Rihanna and more

HEATING UP

Rihanna prepares to take a dip with her new beau – Los Angeles Dodgers outfielder Matt Kemp – Monday while vacationing at a luxury resort in Cabo San Lucas, Mexico. According to an eyewitness, the couple "couldn't keep their hands off of each other" and "kept kissing while gazing out over the ocean."