Liv Tyler Celebrates Her 31st Birthday in Paris

By Nina Biddle

07/01/2008 at 12:15 PM EDT

Liv Tyler isn't letting her recent separation from British rocker Royston Langdon keep her from having a happy birthday.

The actress, who turned 31 on Tuesday, celebrated by traveling to Paris for a couple of days with her sister Chelsea, 19.

The single mom told PEOPLE she is "excited" about her vacation. "It's my birthday tomorrow," she said Monday night, at a Paris bash called The Blue Soiree at the Hotel Crillon for Lanvin and Acne, "and I'm going to spend it with my sister and we're going to a Givenchy show. I'm excited to have a little fun here with my sister."

Sporting a Lanvin black strapless cocktail dress, Tyler also had praise for designer Alber Elbaz. "I love Alber Elbaz," she said after greeting him with hugs and kisses. "He's such a kind man. I love Lanvin – he made [the dress] for me."

The Parisian life seems to suit Tyler, who added, "I woke up this morning to the sounds of birds in the courtyard."

Tyler announced in May that she and Langdon had separated. The couple wed in 2003 and have a son, Milo, 3.