With Lindsay Lohan in rehab, Hilary Duff is apparently free to party as hard as she wants without fear of bumping into her nemesis.

Hilary, who fell out with Lindsay over Aaron Carter in 2002, is not usually seen on the LA party circuit but according to Us Weekly, Hilary arrived at celebrity favourite Hyde on Thursday night ready to party.

The 19 year old was reportedly already drunk when she arrived at the club with her big sister Haylie around 11pm.

Onlookers report that the two were “all over” their (older) dates for the evening, with Hilary laughing and flirting while sat in her date’s lap.

Hilary was also spotted with in the women’s bathroom with a girlfriend and a “flamboyant” male friend. The source added: “It was kind of inappropriate. She was pretty drunk and staggering around the bathroom, bumping into people and shrieking that her gay male friend had a vagina so it was okay for him to be there.”

“When I’ve seen Hilary out in the past, she has been relatively composed, but tonight she was acting pretty wild.”

Hilary split from Good Charlotte frontman Joel Madden in November after a two year relationship.