"Hilary Duff and her lover Mike Comrie" celebrating a friend's birthday.

Hilary Duff and Mike Comrie, celebrating a friend's "Eric Dane and Rebecca Gayheart" birthday at LAVO Italian Restaurant inside Las Vegas's Palazzo Resort and Casino with a huge crew.

Lovebirds Hilary Duff and Mike Comrie, celebrating a friend's birthday at LAVO Italian Restaurant inside Las Vegas's Palazzo Resort and Casino with a huge crew. After eating dinner , the group ventured to the upstairs nightclub where they wasted no time dancing to DJ Five's set. The group drank champagne – eight bottles of Cristal! – as the evening continued. The next day, Duff and Comrie hung at a poolside cabana at TAO Beach, enjoying their friends' company over lunch and drinks.

walking along the Seine in Paris toward the Eiffel Tower. Along the way they stopped at the Musée d'Art Moderne de la Ville de Paris, where Gayheart posed playfully beside the outdoor statues. Next up on their Parisian walking tour, the two stopped by the Trocadero, snapped pictures of the Eiffel Tower and grabbed ice cream before heading to a shaded café for drinks.

Tyra Banks and boyfriend John Utendahl, ordering steak and creamed spinach during dinner at STK Los Angeles. The couple was extremely friendly with their server and spent their meal deep in conversation, a fellow diner tells us.

Hilary Duff's Hawaiian Beach Bod