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International singing star Charice Pempengco, 18, underwent non-invasive Botox and Thermage procedures administered by celebrity cosmetic surgeon Dr. Vicki Belo on July 17 supposedly in preparation for Charice' guest role in Glee, reports  ABS-CBNNews.com.

Saying she was afraid of needles, Charice cried when Belo injected Botox into her face. The 30-minute thermage procedure was painless, according to  ABS-CBNNews.com.

Belo said the procedures were done to make Charice' "naturally round face" narrower. "I've been noticing that Charice' face is getting wider... Although her body is very small, she looks fat because her face is getting wider. One of the reasons for that is because she chews gum. If you chew a lot of gum, your chewing muscles get bigger."

Belo added, "The other thing, she really has a naturally round face. So we did Thermage, pampaliit ng mukha 'yon... 'yong muscle [sa jaw area] na nagbu-bulge, puwedeng i-Botox para maging normal ulit. And then she will not chew gum anymore  para maganda na siya sa Glee."

According to Belo, the effects of the Thermage procedure will be seen in three months, while that of the Botox will be seen in about a month. Charice will start taping for Glee on July 28 or 29.

Charice said a lot of people are wondering if she can compete with Rachel Berry, Glee's resident diva (played by Lea Michele) whom Charice's character, a Filipino foreign exchange student, will give "a run for her money." Charice told ABS-CBNNews.com, "So, siyempre sobrang laki ng pressure... Isa ito sa mga big preparations namin for Glee. Gusto ko naman mag-mukhang fresh."

Charice performs at the Eastwood Mall Open Park after undergoing cosmetic procedures on July 17.

After undergoing the cosmetic procedures, Charice performed the last of her concert series in Manila at the Eastwood Mall Open Park. Among the 5,000-strong crowd were Belo and rumored boyfriend Hayden Kho Jr.