Justine Henin completed a French Open title hat-trick by thrashing Ana Ivanovic 6-1 6-2 in a one-sided final.

The Belgian won at Roland Garros for the third successive year - and fourth time in all - with a fine performance, but Ivanovic's error-strewn display meant she hardly had to break sweat.

The 19-year-old sprayed the ball all over Court Philippe Chatrier and only for one game did the outcome ever appear to be in the doubt.

That was the very first, the first-time Grand Slam finalist breaking Henin to take a shock lead.

However, from the moment Ivanovic squandered a 40-0 lead in the following game, her nerves clearly showing with a dodgy ball toss, Henin dominated.

Ivanovic's biggest shot, her forehand, fell apart rapidly and it was soon joined by the backhand as the top seed swept through the first set in just 34 minutes.

The seventh seed eventually snapped a run of eight straight games against her in the second set but by then the damage had been done.

A first ace of the match from Henin took her to championship point and the title was hers once again when she put away a forehand volley at the net before throwing her racquet into the air in total joy.

Victory means Henin becomes only the second player in the Open era to win three French titles back-to-back. The only previous woman to acheive the feat was Monica Seles from 1990-92.

The world number one, who won the tournament without dropping a set for the second year running, also joins Chris Evert, Steffi Graf, Margaret Court and Helen Wills Moody in having won four or more titles at Roland Garros since 1925, the year the championships were opened to non-French players.

While the victory was historic, it was also emotional for Henin for off-court reasons.

Her marriage broke down at the start of the year and she has since got back on good terms with her close family, many of whom she has not spoken to for years.

"I have still not understood what has happened to me," she said.

"It's just great. I wanted this victory so much. There are a lot of emotions.

"It was the atmosphere, what I felt when I won, and the fact that my family was there.

"It's been a huge step in my life in the last few months. And I was glad I could give them this victory.

"We are finally united in this joy."

Ivanovic paid tribute to Henin's achievement, saying: "I lost to a great player who played amazingly."

However, she admitted nerves had hampered her bid, particularly in that second game when she had a chance to open an early 2-0 lead.

"I was a bit nervous. My ball toss was going everywhere and I couldn't really control my game."